It’s a beautiful watch from a super small Swiss watch producer. Unique bezel design with a tough tool diver feel. Mine is 20/56 signed on the crown. The steel bracelet is nice as well. Based on the 1968 OWZ Ocean Graph Diver. It uses a 5.6mm dome sapphire crystal and 4 seals on the crown yikes!!
Ollech & Wajs Ocean Graph S 3300FT/1000m Diver
Luckyshotadded June 4, 2020