Continuing with 1970's Vintage:
1974 Bulova Caravelle 200m "diver" with West German (Pforzheimer Uhren-Rohwerke) PUW 1561 movement inside. PUW went under completely in 1990 after struggling for a number of years in the Quartz Revolution, in spite of developing and making their own quartz movements (I have two watches with PUW quartz in them). Bezel is friction and bi-directional, very common on dive watches in its era. Bracelet is neither original nor period. It's a Seiko Monster with the clasp changed, replacing it with an identical, sterile one without brand markings.
Caravelle Diver 01a.jpg
Caravelle Diver 02a.jpg