Seiko 6309-7040
150m Professional Diver's
What Should You Pay?
Estimated fair market values. Actual prices vary by condition, completeness, and seller.
The 6309-7040 was Seiko's primary professional diver's watch from 1976 to 1988. Known for its distinctive cushion case shape and robust construction, it was the predecessor to the modern Seiko 'Turtle' divers. The watch featured Seiko's proven 6309 automatic movement and was widely used by both professional and recreational divers.
Specifications
Movement
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