Zodiac Seawolf ref. 699 from 1959 This is a 1959 Zodiac Seawolf ref 699. Zodiac used A. Schild movements and the 17 jewel AS1624 was used by Zodiac in the Seawolf. This seawolf has the cal. AS1624 non hacking 17j, 18000bph automatic movement with a 41hr power reserve. This is a 2nd gen maybe even a 1st gen. Dive watch. The crown doesn't screw down. The bezel has no clicks. Just turns freely. The watch above has the snap-shut type back. Engraved on the watch back is Zodiac Seawolf, (with the Zodiac cross-hair symbol), 10 ATM Especially Water-Tested. 10 ATM case backs are somewhat rare I'm trying to determine if this is the correct and original crystal.