This came up in another thread and I posted the info below. Some members thought it should be included here for future reference so here goes...
I can't claim any credit for this info as it is something I came across a while ago and stored for future use. Apologies and thanks to the orignal source.
Following are the various Submariner vintage models (by case number):
6200 - Original Submariner
Launched in 1953. Depth rated to 200m (660 ft) with an 8mm crown. No crown guard and no depth rating on dial. Submariner not printed on dial. Dial similar to Explorer style dials of same period. Non-Chronometer A296 movement with 18 Jewels. Larger case than the 6204 or 6205. Larger crown marked Brevet.
Updated in 1955. Depth rated to 200m (660 ft) with an 8mm crown. No crown guard and no depth rating on dial. Submariner printed on dial. Included the Mercedes hands. Non-Chronometer A296 movement with 18 Jewels. Larger case than the 6536 or 6538. Larger crown marked Brevet.
6204 - Launched in two versions
Launched in 1954. Depth rated to 100m (330 ft) with a 6mm crown. No crown guard and no depth rating on dial. Submariner printed on dial. Dial revised from 6200. Used the upgraded non-chronometer A260 movement with 18 Jewels. Smaller than the 6200.
Updated in 1954. Depth rated to 100m (330 ft) with a 6mm crown. No crown guard and no depth rating on dial. Model name "blacked-out." Non-Chronometer A260 movement with 18 Jewels. Smaller than the 6200
6205 - Launched in 1954. Depth rated to 100m (330 ft) with a 6mm crown. No crown guard and no depth rating on dial. Model name not present on dial. Dial revised from
6200 - Used the upgraded A260 movement. Same size as the 6204. Smaller than the 6200
Updated in 1955. Depth rated to 100m (330 ft) with 6mm crown. No crown guard however depth rating now printed on dial (white). Model name present on dial. A260 movement. Smaller than the 6200
6536 - Launched in 1955. Upgrade of the 6205 model. Depth rated to 100m (330 ft) with the 8mm crown. No crown guard and no depth rating on dial. Submariner printed on dial. First time use of the Mercedes hands. Movement upgraded to the non-chronometer 1030 with 25 Jewels. Updated in 1956. Depth rated to 100m (330 ft) with a 8mm crown. No crown guard however depth rating now printed on dial (white). Submariner also printed on dial. Non-Chronometer 1030 movement. First time Bezel contained markers for first 15 minutes.
6536/1 - Launched in 1956. Depth rated to 100m (330 ft) with a 8mm crown. No crown guard with depth rating printed on dial (white). Model name also present on dial. Chronometer 1030 movement with 25 Jewels. Bezel with markers for first 15 minutes. Triangle on Bezel painted red.
6538 - James Bond Submariner (Dr. No)
Launched in 1955. Upgrade of the 6204 model. Depth rated to 100m (330 ft) with the 6mm crown. No crown guard and no depth rating on dial. Model name present on dial. Used the upgraded A260 movement.
Updated in 1956. Depth rated to 200m (660 ft) with 8mm crown. No crown guard with depth rating printed on dial (white). Model name also present on dial. Upgraded to the 1030 movement. Case upgraded to same size as the
6200 (larger). Updated in 1956. Depth rated to 200m (660 ft) with 8mm crown. No crown guard with depth rating printed on dial (white). Model name also present on dial. 'Officially Certified Chronometer' now painted on dial. 1030 movement.
5508 - Launched in 1958. Upgrade to the 6536/1 model. Depth rated to 100m (330 ft) with 6mm crown. No crown guard and depth rating on always printed on dial. Model name printed on dial. Upgraded to the new Chronometer 1530 movement. Updated in 1964. Luminous markers not enclosed by circular border.
5510 - Launched in 1958. Upgrade to the 6200 model. Depth rated to 200m (660 ft) with the 8mm crown. No crown guard and depth rating printed on dial. Submariner printed on dial. New Chronometer 1530 movement.
Updated in 1964. Depth rated to 200m (660 ft) with the 8mm crown. No crown guard. Depth rating printed on dial. Printing on dial changed to white.
5512 - Launched in 1959. Depth rated to 200m (660 ft) with 8mm crown. Crown guard. Depth rating printed on dial. Chronometer. 'Officially Certified Chronometer' printed on dial. Submariner printed on dial. New 1560 Chronometer movement. Updated in 1965. Depth rating to 660 ft (200m) with 8mm crown. Crown guard. Depth rating printed on dial. Superlative added to printing on dial.
5513 - James Bond Submariner (Live and Let Die)
Launched in 1962. Depth rated to 200m (660 ft) with 8mm crown. Crown guard. Depth rating printed on dial. Non-Chronometer. 1530 movement. Dial marked with Swiss. Updated in 1963. Depth rating to 660 ft (200m) with 8mm crown. Non-Chronometer 1520 movement. Swiss T<25 printed on dial.
Navy model launched in 1968. Depth rated to 660 ft (200m) with 8mm crown. Crown guard. Soldered strap bars. Large hour and minute hands. Large T printed above depth rating to indicate luminous material as tritium.
5517 - Launched in 1971 for the British Marines. Depth rated to 660 ft (200m) with 8mm crown. Crown guard. Crown with triple-lock. Bezel with 60 minute markers. Soldered strap bars. Large hour and minute hands. Large T printed above depth rating to indicate luminous material as tritium.
1680 - Launched in 1966. Depth rated to 660 ft (200m) with 8mm crown. Crown guard. Depth rating printed on dial. Chronometer. New 1575 Chronometer movement with Date. Raised and flat crystal. Submariner printed in red. Updated in 1972. Depth rated to 660 ft (200m) with 8mm crown. Crown guard. Crown with triple-lock. Depth rating printed on dial. Chronometer. 1575 Chronometer movement with Date. Raised and flat crystal. All dial lettering printed in white.
16800 - Launched in 1982. Depth rated to 1000 ft (300m) with 8mm crown. Crown guard. Crown with triple-lock. Depth rating printed on dial. Chronometer. New 3035 Chronometer movement with Date. Low-profile sapphire crystal. All dial lettering printed in white.