Submariner developments first appeared in 1955.

In 6205 almost identical to its predecessor, the same caliber and other characteristics. But usually there is no registration dial submariner. Restrictions on the maximum depth is still 600 feet.
It has high-quality Rolex Series 600 A296 (Rolex 775) of BUBBLEPACK; case back to a more in-depth and more personal data bending and depth limit should be raised to 660 feet (200 meters). Standard Series submariner inscription on dial-up and winding up of 6 millimeters crown.

These two models remain in production until 1957.Comparing original 6204-6205 and 6200, you can see that in the standard dial-up of the inscription is gold, there is no depth indicators, namely, the original design of the hands to remain in production for about a year until 1957, but no results of the panel indicators 1-15 minutes.

6200 there is a version of the dial-up known as the Explorer, the market produced only in English.

There is no inscription submariner and time in the Arabic numerals, gold, 3, 6 and 9 o’clock.

Winding crown, measuring 8 mm. , Was originally marked “diploma” is the prototype for the future TRIPLOCK has three points, has produced about 18 months, from 1956 to 1958.

This series still has the original panel with the red triangle. Crown liquidation introduced to make it easier to use the thick gloves worn by divers.