Swiss Watch Fair 1967 BF 73
This diving chronograph boasts a novel technique of giving the push-pieces the fullest possible water-resistance. They are specially protected by a screw-capsule topped by a cap, replaceable in case of tear. It also has a screwed-in crown and turning bezel, a minute circle graduated to the 1/5th of a second, minutes and hours totalizers. Guaranteed waterresistant to 25 atmospheres (820 feet or 250 meters) (UNIVERSAL ’Space Compax")