Beyond the French diving units the 50 Fathoms was also adopted by the Israeli, German, Swedish, Norwegian, Danish, Finnish, and most famously, American fighting forces. When the Americans were looking for a dive watch, there was a resolute "Buy American" policy for all units - so no watch with "Blancpain" on the dial would ever pass muster. So, an American company named Tornek-Rayville took the 50 Fathoms and rebranded it - they may or may not have replaced the Swiss jewels with American jewels for good measure. About 1000 Tornek-Rayville 50 Fathoms were produced, and most were destroyed by the Navy at the end of the commission, so they are indeed very hard to find.
