Large 1973 Bulova 666ft Snorkel Diver Amazing Mat black dial that aged to a dark grey patina in lightning. T SWISS T. 11AOACB Swiss 17 Jewel Automatic movement. Runs and tells time, Comes on a dark grey Nato strap. Signed Bulova Screw down crown. Pictures are part of the description. Push pull to change date. It runs great, crown catches to change time but sometimes takes second to catch 40mm Case 45mm Long 23mm Lug width Push pull to change date 2 day quickset, manually wind to do singe day. When changing time pulling the crown and winding to flip date is needed but changes. Crystal has a slight warp that is very hard to tell unless you touch it. As a vintage watch service is always recommended. local pickup Plano tx Snorkel devil diver 666ft