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See also The Stand Dating Table
Objective Dating Table

The following table lists those objectives examined to date. There really is not enough data here to arrive at any sort of conclusion. The key to arriving at a reasonable dating system is more data. It certainly looks as if batches of numbers were released for particular styles of objective, but the batches not in number/chronological order, though the objectives within each batch probably are in chronological order.
The column representing the Name Inscription has the following codes used:-
  • A - W. Watson & Son
  • B - W. Watson & Sons
  • C - W. Watson & Sons Ltd
  • D - Overlapping Ws
  • E - WATSON
  • N - No inscription
  • U - Unknown (not examined)
3
Objective Number
Working distance
Type
Date (if known)
Name
Notes
300 8mm N.A. 0.65 Holos - B Brass. 160mm Tube length
458 16mm Holos - B 250mm Tube Length All Bright Brass
1046 2mm N.A. 1.37 Apo. - C Brass.
1062 1/12" Versalic - C Brass.
1080 1/6 No type - C Bright Brass and nickel - Tapered Style
1088 16mm N.A. 0.30 Apo - - -
1105 8mm N.A. 0.65 Apo - - -
1107 8mm N.A. 0.65 Apo. - C Brass. 200mm Tube length
1222 24mm N.A. 0.24 Holos - - -
1550 1/12 Versalic - C Black/chrome/brass - Tapered Style
2355 2mm oil Imm. Holos - C Brass and Nickel
2378 1/12th Holos - C Brass and Nickel
2400 x8 N.A. 0.30 Apo - - -
2416 x40 NA .65 Para - E Service III
2498 1/6th Para - C Brass and Nickel
2589 x38 N.A. 0.85 Apo - - -
2991 2mm 6th December 1949 - -
3055 4mm 6th December 1949 - -
3078 8mm 6th December 1949 - -
3091 16mm 6th December 1949 - -
3098 O.I. x100 Para 1.30 PHASE - E Service III
3606 2mm N.A. 1.37 Para - - -
3641 4mm N.A. 0.85 Para - - -
3657 4mm Holos 11th August 1941 C All bright Brass
3658 1/6" - - C Brass. Metalurgical
3661 x40 N.A. 0.65 Para - E Phase,green ring, short.
3684 1/6" N.A. 0.74 Para - C Brass/Chrome. Tapered
3801 1/12" oil immersion Versalic - C [ND]
4150 4mm Apo - - [HC]
4314 1/12 Versalic - C Black and Chrome - Tapered Style
4582 1/6 Para - D Black and Nickel[HC]
4969 x40 Para 0.65 - E Service III
5036 1/6 Para - - Black and Brass
5288 x40 NA .65 Para - E Service III
5352 O.I. x100 NA 1.30 Para - E Service III
5383 x40 N.A. 0.63 Para - E Chrome - Green ring [E]
5588 1/6" Para - D Brass/Chrome.
5594 1/6" Para - D Brass/Chrome.
6135 x100 N.A. 1.30 Para - E Oil, red ring.
6185 4mm N.A. 0.95 Holos - - -
6284 1/12 in. N.A. 1.25 Utility - - -
6293 4mm N.A. 0.95 Met. Holos - - -
6312 16mm N.A. 0.45 Holos - - -
6405 1/12 in. O.I. Utility - - -
6410 2mm O.I. N.A. 1.37 Holos - - -
6445 25mm Holos 11th August 1941 C All bright Brass
6572 1/12th Utility - D N.A. 1.25
7212 1/6" N.A. 0.74 Para - C Brass/Chrome. Tapered
7248 1/6" Para - D Brass/Chrome. Tapered
7334 1/12 Utility 18th December 1935 D -
7340 1/12inch Utility - - 1.25 N.A. Oil. Black and Brass [H]
7355 16mm Holos 11th August 1941 C All bright Brass
7675 1/6 in. Para - - -
8545 16mm Holos - C All Bright Brass
8649 4mm N.A. 0.95 Holos - C Brass. 160mm Tube length
9073 x60 N.A. 0.85 Para - E Gold ring.
9108 1/6 Para - D Brass and Nickel
9121 x50 N.A. 0.95 Fluorite - D Oil. Chrome - green ring [E]
9183 1/12 Utility - - -
9276 2in. Holos - C All Bright Brass
9317 1/12 oi Utility - U -
9635 1/6 Para - D Brass and Chrome
9649 8mm Holos - - -
9924 1/12" OI Utility - D Black and Chrome
10133 1/12 Utility - D Black and Chrome
10240 1/6th Para - - -
10552 1/12in. Utility - D Black & Chrome- Tapered pattern
10555 1/12in. Utility - D Black & Chrome
10561 1/12" Utility - D Black/Chrome. Oil. Corr. Collar
10564 1/12" N.A. 1.25 Utility - - Black/Chrome.
10615 1/4inch Para - - Black. x26 [H]
10638 1/4 Para - D Black and Nickel[HC]
10830 1/12 Para 7th October 1946 U -
11663 2in. Para - C All Black - Tapered pattern
11690 1/12in. Utility - D Black & Chrome- Tapered pattern
11933 x96 1/12" N.A. 1.25 Utility - - Black/Chrome. Oil
12238 1/12" OI Versalic - C Black and Chrome
12309 1/6 in. N.A. 0.70 Para - - -
12495 x40 NA .65 Para Phase - E MicroSystem 70
12667 x40 N.A. 0.85 Apo - D Turquoise ring.
12790 x40 N.A. 0.65 Para - D Phase, green ring.
12845 1/12" OI Versalic - C Black and Chrome
12988 oil x100 NA 1.30 Para - E Service III
13192 1/6" N.A. 0.70 Para - D Brass.
13290 oil x90 NA 1.30 Fluorite Phase - E MicroSystem 70
13305 x40 Para - D MicroSystem 70
13462 x100 N.A. 1.30 Para - D Oil, red ring.
13615 16mm. N.A. .28 - - - Black and Brass
13679 4mm. N.A. .70 - - - Black and Brass
13764 oil x90 NA 1.30 Fluorite Phase - E MicroSystem 70
13908 Versalic 1/12 OI - - - With Service stand 65344
14354 1/6" N.A. 0.70 Para - D Brass. Tapered
14455 1/12" - 6th November 1940 - [CA]
14482 1/12" Versalic - - Black/Nickel
14695 1/12 oil. imm. Versalic - - -
14768 x40 na. .63 Para - D Microsystem 70
14936 1/12" Versalic - C Black/Chrome. Oil.
15069 x100 N.A. 1.30 Para - D Oil, red ring.
15195 x90 na. 1.3 oil Fluorite - D Microsystem 70
15498 2/3 Para 30th September 1930 U -
15504 1/6 Para 30th September 1930 C-
15718 1/12 oil imm. Versalic - C Black and Nickel with iris
15743 x90 N.A. 1.37 Apo - D Oil, red ring.
16153 2/3rds Para - - -
16456 oil x100 NA 1.30 Para - E MicroSystem 70
16640 1/12" OI Versalic - C Black and Chrome
16642 1/12" OI Versalic - C Black and Chrome
16648 1/12" OI Versalic - C Black and Chrome
16774 2/3 in. - - - -
16874 1/12" OI Versalic - C Black and Chrome
16876 1/12" OI Versalic - C Black and Chrome
16877 1/12" OI Versalic - C Black and Chrome
16880 1/12" OI Versalic - C Black and Chrome
16939 1/12" OI Versalic - C Black and Chrome
16940 1/12" OI Versalic - C Black and Chrome
16997 1/12" OI Versalic - C Black and Chrome
17001 1/12" OI Versalic - C Black and Chrome
17116 2/3 in. Para 26th November 1934 - -
17223 1/12" OI Versalic - C Black and Chrome
17249 1/12" OI Versalic - C Black and Chrome
17269 1/12" OI Versalic - C Black and Chrome
17274 1/12" OI Versalic - C Black and Chrome
17559 1/12" OI Versalic - C Black and Chrome
17602 1/12" OI Versalic - C Black and Chrome
17935 1/6 in. Para 26th November 1934 - -
17949 x50 N.A. 0.95 Fluo. - D Oil, phase gold ring.
18004 1/6 Para 10th September 1935 C Black and Chrome - Tapered Style
18018 1/12" OI Versalic - C Black and Chrome
18097 1/12" OI Versalic - C Black and Chrome
18158 1/12" OI Versalic - C Black and Chrome
18160 1/6 in. Para - D -
18172 1/12 Oil 24th May 1946 C Black and Chrome - Tapered Style
18197 2/3 Para 10th September 1935 C Black and Chrome - Tapered Style
18208 2/3 in. Para - D -
18261 1/6 - - - On Kima 60059 [HC]
18333 oil x90 NA 1.30 Fluorite - E MicroSystem 70
18376 x90 N.A. 1.30 Fluo. - D Oil, red ring.
18587 1/6 in. Para 22nd November 1935 - Black and Brass
18705 2/3 in. Para 22nd November 1935 - Black and Brass
19568 1/6 in. Para 8th October 1936 - -
19634 x40 NA .65 Para - E MicroSystem 70
19727 2/3 in. Para 8th October 1936 - -
20475 x40 Phase Para - E Microsystem 70
20546 2/3 Para Para - D Brass and Chrome
20695 1/12 Para 26th April 1949 U -
20755 1/12" OI Versalic - C Black and Chrome
20756 1/12" OI Versalic - C Black and Chrome
20757 1/12" OI Versalic - C Black and Chrome
20763 1/12" OI Versalic - C Black and Chrome
20812 1/12" Versalic - - x96 oil imm. [PS]
21685 1/12 oil imm. Versalic - C Black and Chrome - Tapered Style
21695 1/6" N.A. 0.70 Para - - Brass.
21906 Para 1/6 0.70 - - - with Service stand 65344
22043 1/6" N.A. 0.70 Para - D Brass. Tapered
22074 2/3" Para - D Brass.
22173 1/12 oil imm. Versalic Metallurgy - C Black and Chrome - Short - Tapered Style
22272 1/12" OI Versalic - C Black and Chrome
22428 1/6 Para 26th May 1938 - [AB]
22569 2/3 Para 26th May 1938 - [AB]
22570 x100 N.A. 1.30 Para - D Oil. Chrome - Red ring [E]
22809 x100 N.A. 1.30 Para - D Oil, red ring.
24920 2/3 Para - D Brass and Chrome - Tapered Style
25193 Versalic - - - Marked P147 UNIV.
25367 1/6 Para - D All Bright Brass - Tapered Style
26312 2/3" Para - - Brass/Chrome.
26506 1/6" N.A. .70 Para 6th November 1940 - All black. [CA]
26665 2.3" Para 6th November 1940 - [CA]
26816 1/6 Para 2nd January 1941 - -
27014 2/3 Para 2nd January 1941 - -
28077 2/3 Para - D -
30431 1/6 Para - D -
30797 2/3 Para - D -
32327 2/3 Para - D Brass and Nickel
32976 1/6 Para - D All Bright Brass
33144 2/3 Para - D Brass and nickel
33675 1/6 in. N.A. 0.70 200mm T/L Met. - - -
34632 2/3" Para - D Brass/Chrome.
35281 2/3 Para - D Brass and nickel
36636 2/3 Para 24th May 1946 D -
36647 1/8 in. - - - -
36751 1/6 Para 24th May 1946 D Black and Chrome - Tapered Style
38381 2/3 Para - D Black and Chrome - Tapered Pattern
38978 1/6 Para - D Black and Chrome - Tapered Pattern
39613 X42 na .20 Para - U -
39730 1/6 na .70 Para 22nd April 1947 U Black/Chrome[HC]
39646 1/6 Para - D Black and Brass - Tapered Pattern
40195 1/8 Para N.A. 0.70 - - Black.Nickel. Marked Watson and St. Mary's Hosp Med Sch. [HC]
40320 2/3 x10 na .28 Para - U -
40597 2/3 x10 na .28 Para 22nd April 1947 U Black/Chrome[HC]
41081 1/6 Para - D Black and Chrome - Tapered Style
41119 1/6 Para - D Black and Chrome - Tapered Style
41353 1/6 in. - - - -
41520 1/6 in. Para - D -
41524 1/6 in. Para - D -
41546 1/6 in. Para - D -
42019 2/3 Para - D Black and Chrome - Tapered Style
42121 1/6 Para - D Black and Chrome - Tapered Style
42187 16mm Para 29th May 1959 U -
42249 1/6 Para 12th February 1948 U -
42266 2/3 in. - - - -
42302 16mm Para 23rd July 1959 - With microscope Service 127681
42435 2/3 in. Para - D -
42442 2/3 in. Para - D -
42556 1/6 in. Para - D -
42572 40mm Para - E Black and Chrome Service II style
42687 4mm Para 23rd July 1959 - With microscope Service 127681
42846 1/6 in. Para - D -
43281 2/3 in. Para - D -
43283 2/3 in. Para - D -
43293 16mm Para - E Black and Chrome - Service II style
43359 1/6 Para - - x42 N.A. 0.70 [AB]
44204 4mm Para - E Black and Chrome - Service II style
44450 25mm Para N.A. 0.21 20th May 1960 - On delivery note from W. Watson & Glover (X-Ray) Ltd. [RH]
44520 40mm Para - E Purple and Chrome - Bactil 60
44986 16mm Para - E Purple and Chrome - Bactil 60
45036 4mm Para - E Purple and Chrome - Bactil 60
45138 4mm Para 18.3.60 - .
45249 16mm Para - - -
45462 2mm Para O.I. N.A. 0.1.30 20th May 1960 x100 On delivery note from W. Watson & Glover (X-Ray) Ltd. [RH]
45482 2mm Para - U -
45605 4mm Para - - -
46235 1/6 Para - D Black and Chrome - Tapered Pattern
46236 1/6 Para 14th December 1948 U Black and Chrome - Tapered Pattern
46287 40mm Para - E Black and Chrome Service II style
47324 2mm x100 Para - E Chrome Service II style
47505 2mm Para - - Chrome N.A. 1.25 x100 Oil. Imm. [H]
47522 1/6 Para 26th April 1949 U -
47855 x10 Para - U -
48217 2/3 Para 26th April 1949 U -
48444 2/3 Para 12th February 1948 U -
48518 x40 4mm N.A. 0.70 - - - -
48676 x40 4mm N.A. 0.70 Para 26.10.60 - -
48812 x4 40mm N.A. 0.13 - 26.10.60 E Black/Chrome.
49033 1/6 in. Para - - -
49369 2/3 in. Para - - -
49671 x10 16mm N.A. 0.28 - - - -
50097 1/6 - 6th December 1949 - -
50279 1/6 Para N.A. 0.70 - D x48 [PS]
50545 1/6 Para - D Black and Chrome Tapered Style
50551 1/6 Para - D [CT]
50770 40mm Para - - [HC]
50947 2/3 Para - D [CT]
51715 4mm Para - E Black and Chrome Service II style
51779 4mm Para - E Black and Chrome Service II style
52148 40mm Para - E Black and Chrome Service II style
52506 1/6 Para Metallurgy 22mm tube length - D Black and Chrome - Tapered Style - Short
53080 4mm Para NA 0.70 - - Supplied with Kima 66323
53226 4mm Para - - Supplied with Bactil 60 - 133536
53475 2mm Para 23rd July 1959 - With microscope Service 127681
54851 16mm Para - - Supplied with Bactil 60 - 133536
54867 16mm Para - E Black and Chrome Service II style
55288 50mm 2.75x Para - - -
55302 16mm Para - E Black and Chrome Service II style
55662 2mm Para - - Supplied with Bactil 60 - 133536
56474 40mm Para - E Black and Chrome Service II style
57763 1/6 Para 7th October 1946 U -
59119 40x N.A. 0.70 Para - - -
88657 x10 Para - U -
99590 x42 1/6" N.A. 0.70 Para - D Black/Chrome.
111224 4mm Holos - C All Silver Nickel
132360 x5 Stereo Objectives - - N Grey, bayonet fitting. These objectives usually bear the same number as the stand they were supplied on, so it may be assumed that a Stereo stand existed with this number and such a stand number has been entered into the preceding table.
134678 x5 Stereo Objectives - - N Grey, bayonet fitting. These objectives usually bear the same number as the stand they were supplied on, so it may be assumed that a Stereo stand existed with this number and such a stand number has been entered into the preceding table.
165624 1/6 Argus - D Black and nickel - Tapered Pattern
181133 1/6 Argus - D All black - Tapered Pattern
181137 1/6 Argus - D All black - Tapered Pattern
181140 1/6 in. Argus - D All black - Tapered Pattern
181142 1/6 in. Argus - D All black - Tapered Pattern
181162 2/3 in. Argus - D All black - Tapered Pattern
181200 1/6inch Argus - - [HC]
181902 1/6 in. Argus - D On Kima 55777.[CT]
182085 ? ? - - On Kima 55777[CT]
183864 1/6 in. Argus 18th December 1935 D All black - Tapered Pattern
183920 2/3 in. Argus 18th December 1935 D All black - Tapered Pattern
184067 1/6 in. Argus - - -
186346 2/3 in. - 11th March 1937 - .
187844 1/6 in. Argus - - -
187997 2/3 in. Argus - - -
188612 1/6 in. Argus - D All black - Tapered Pattern
189167 1/6 in. Argus - D All Black - Tapered pattern
189652 1/6 in. Argus - - -
190759 2/3 in. Argus - D Black/Chrome.
193645 2/3 in. Argus - - -
193658 2/3 in. Argus - D All Black - Tapered pattern
193678 1/6 in. Argus - - -
196676 1/6 in. Para - - -
197411 2/3 in. Para - - -
197893 1/6 Para - D Black and Chrome - Tapered pattern
198575 1/6" N.A. 0.70 - - D Black/Chrome.
198875 2/3 Para - D Black and Chrome - Tapered pattern
198886 2/3 in. Para 14th December 1948 U Black and Chrome - Tapered pattern
200835 2/3 Para - D Black and Chrome - Tapered pattern
319763 x40 Para - U -
499693 x10 NA .30 Para - E Short, all chrome with coloured ring
516318 x10 NA .30 Para - E Short, all chrome with coloured ring
525028 x45 Holos - - N.A. 0.65 [HC]
525362 oil x100 1.28 Para - E All chrome with coloured ring [HC]
526036 x10 N.A. 0.30 Para - - [HC]
557452 x45 NA.0.65 Para - E All chrome with coloured ring [HC]
557908 Oil x100 N.A. 1.28 Para - E All chrome with coloured ring
558075 x45 Para - - [KC]
569681 10x N.A. 0.30 Para - - -
569739 10x N.A. 0.30 Para - - -
569811 10x N.A. 0.30 Para - - -
569813 x10 N.A. 0.30 - - - Chrome. Blue ring
571878 oil x100 NA 1.28 Para - E Short, all chrome with coloured ring
B1188 x50 4mm N.A. 0.70 Para - E Black/Chrome.
B1523 25mm Para 5.1.51 - .
B1619 x4 40mm N.A. 0.13 - - E .
B1901 x50 - - - Marked P147 UNIV.
B2352 2mm Para - - Chrome. N.A. 1.28 x100. [H]
B2385 6mm Para 5th January 1951 - -
B3270 4mm Para - - N.A. 0.70. Black and Chrome
B3391 16mm Para - U Associated with stand 103692 (1950)
B3799 100x O.I. N.A. 1.28 Para - - -
B4236 4mm Para - U Associated with stand 103692 (1950)
B4814 x100 N.A. 1.28 Para - - -
B5113 2mm Para - - Oil. Chrome. Stamped Vet. Med. 16.
B5663 2mm Para 25th July 1951 U -
B5665 2mm Para - U -
B5667 2mm Para - U -
B5675 2mm Para 25th July 1951 U -
B5800 2mm Para - U -
B6695 100x O.I. N.A. 1.28 Para - - -
B7173 2/3 Para 7th October 1946 U -
B7400 4mm Para 25th July 1951 U -
B7408 4mm Para 25th July 1951 U -
B8330 16mm Para - E Black and Chrome - Service II style
B8613 2mm Para - U -
B9223 16mm Para 25th July 1951 U -
B9226 16mm Para 25th July 1951 U -
B9273 40mm Para 25th July 1951 U -
B9315 40mm Para 25th July 1951 U -
B9403 110x O.I. N.A. 1.28 Met. Para - - -
B9495 4mm Para 13th November 1952 U -
B9581 4x N.A. 0.13 Para - - -
B9614 40mm Para 13th November 1952 U -
B10235 10x N.A. 0.28 Para - - -
B10328 x40 4mm N.A. 0.70 - - E .
B10775 x40 Para - U -
B10861 4mm Para - E Black and Chrome - Service II style
B10984 16mm Para 13th November 1952 U -
B11320 16mm Para - E Black and Chrome - Service II style
B11806 4mm Para - E Black and Chrome - Service II style
B12912 4mm Para Metall. - E Black and Chrome - Service II style
B13109 4mm Para 30th September 1952 E Black and Chrome - Service II style
B13190 x40 4mm N.A. 0.70 Para - E Black/Chrome.
B13310 40x N.A. 0.70 Para - - -
B13411 45x N.A. 0.70 Met. Para - - -
B13773 6mm Para 20th July 1954 - -
B13832 16mm Para - E Black and Chrome - Service II style
B14008 2mm Para 30th September 1952 E Black and Chrome - Service II style
B14281 2mm Para - U -
B14565 16mm Para 30th September 1952 E Black and Chrome - Service II style
B14621 x10 16mm N.A. 0.28 Para - E Black/Chrome.
B14741 40mm Para 5th August 1953 U -
B15561 2mm Para - 20th July 1954 -
B16329 x6 25mm N.A. 0.21 - - - Black/Chrome.
B16755 4mm Para - E Black and Chrome - Service II style
B17932 2mm Para 5th August 1953 U -
B18033 4mm Para 5th August 1953 U -
B18294 2mm Para E - Para/2mm N.A. 1.28/Oil Imm./x100/Watson [NH]
B18608 12mm Para 20th July 1954 - -
B18658 16mm Para 5th August 1953 U -
B19768 4mm Para - E Black and Chrome - Service II style
B20482 50mm Para 20th July 1954 - -
B21351 25mm Para 20th July 1954 - -
B21559 4mm Para - E Black and Chrome - Service II style
B21587 4mm Para 2nd September 1954 E Black and Chrome - Service II style
B21643 16mm Para - E Black and Chrome - Service II style
B21814 2mm Para 2nd September 1954 E Black and Chrome - Service II style
B21860 16mm Para 2nd September 1954 E Black and Chrome - Service II style
B22146 4mm Para - 20th July 1954 -
B23132 4mm Para - E Black and Chrome - Service II style
B23279 2mm Para N.A. 1.28 - - Oil imm. x100 [PS]
B24191 16mm Para N.A. 0.28 - E x10 [PS]
B24260 40mm Para - E Black and Chrome - Service II style
B24344 2mm Para 19.1.55 - .
B24434 4mm Para 19.1.55 - .
B24763 16mm Para 19.1.55 - .
B25850 40mm. x4 N.A. 0.13 Para - - [ND]
B26422 x40 Para 1956 - Black and Chrome - Service II style
B27993 16mm. x10 N.A. 0.28 Para - - [ND]
B28728 x4 40mm N.A. 0.13 - - E .
B29103 40mm Para 11th May 1956 U -
B29258 x4 40mm N.A. 0.13 - - E .
B29464 4mm Para 11th May 1956 U -
B29602 x100 oi Para - U -
B29744 2mm Para 11th May 1956 U -
B29774 50mm Para - E Black and Chrome Service II style
B30308 16mm Para 11th May 1956 U -
B30487 x10 Para 1956 - Black and Chrome - Service II style
B30851 2mm Para 10th August 1956 U -
B31029 4mm Para 10th August 1956 U -
B31412 16mm Para 10th August 1956 U -
B31953 2mm Para - E Chrome Service II style
B32211 16mm Para - E Black and Chrome - Service II style
B32368 4mm N.A. 0.70 Para - - -
B32816 4mm Para - E Black and Chrome - Service II style
B33309 25mm Para - E Black and Chrome - Service II style
B33445 22mm Para - E Black and Chrome Service II style
B33547 2mm Para - E Chrome Service II style
B33569 2mm Para - E Chrome Service II style
B33570 2mm Para - E Chrome Service II style
B33582 2mm Para - E Chrome Service II style
B33610 2mm Para - E Chrome Service II style
B33619 2mm Para - E Chrome Service II style
B33634 2mm Para - E Chrome Service II style
B33646 2mm Para - E Chrome Service II style
B33649 2mm Para - E Chrome Service II style
B33862 2mm Para - E Chrome Service II style
B34719 2mm Para - E Chrome Service II style
B34741 2mm Para - E Chrome Service II style
B37626 4mm N.A. 0.70 Para - - X40
B37845 2mm Para 5th March 1959 - [CL]
B37878 2mm Para 29th May 1959 U -
B38447 x40 4mm N.A. 0.70 - - E .
B39457 16mm N.A. 0.28 Para - - X10
B39564 4mm Para 5th March 1959 - [CL]
B40782 4mm Proj. x40 N.A. 0.70 Coated Projection - - [ND]
B41314 4mm Para 29th May 1959 U -
C4546 2mm Para - - Chrome x100 N.A. 1.30 [H]
C5105 2mm Para - - All steel - Service II style [HC]
C7296 4mm Para 18th May 1955 - [GM]
C7327 16mm Para 18th May 1955 - [GM]
C7854 4mm Para - E Chrome - Service II style
C8318 4mm N.A. 0.70 Para - E -
C9965 16mm Para - - -
C10071 4mm Para - - -
C10292 4mm Para - E Chrome - Service II style
C10586 2mm Para - E Chrome - Service II style
C10588 2mm Para - E Chrome - Service II style
C10593 2mm Para - E Chrome - Service II style
E1130 3.6mm Fluorite - - N.A. 0.95 x50 Oil. Chrome [H]
E1293 2mm Fluo. 18.3.60 - .
E1467 x10 16mm N.A. 0.30 Para - - Black/Chrome.
E1715 x90 2mm Fluorite - - Service II type.
E2482 3.6mm Fluorite E - Fluorite/Watson/3.6mm N.A. .95/Oil Imm./x50 [NH]
E2577 16mm Semi-Apo - 20th July 1954 -
E2621 3.6 Fluorite - 20th July 1954 -
E2881 16mm Para - - [HC]
E2937 3.6mm Fluorite - - [HC]
E3022 2mm Fluorite - - [HC]
E3489 16mm Semi-apo 5th March 1959 - [CL]
E3617 3.6mm Fluorite 5th March 1959 - [CL]
E3648 x50 3.6mm N.A. 0.95 - - E Chrome. Oil. Fluorite
E3762 x90 2mm N.A. 1.30 - - E Chrome. Oil. Fluorite
E3819 3.6mm Fluorite - E -
E3886 3.6mm Fluorite x50 Oil. Imm. NA .95 - E -
E3944 16mm Fluo. 18.3.60 - .
E3972 16mm Fluo. 18.3.60 - System 70 type.