Known as the second only small crown guard ever produced by the manufacturer following the 6204 (the reference 6200 known as a big crown was produced at the same time), the reference 6205 was only produced for a very short period (less than a year) and is one of the rare Submariners not to feature the depth rating on the dial. Still fitted with its original radium dial (reading over 20 on the Geiger counter), these extremely rare historical models of the Submariners have become some of the most collectible dive watches on the market today.