For the production dates of the different diver models, I emailedSeiko Japanand asked them to provide detailed info about each variation (the 62MAS, 6105s, 6309s, 6306, 7002 and the 7S26 series). Seiko provided the "approximate" dates of production for the difference movement calibers, but ...
Caliber Movement Automatic Caliber/movement 7S26 Case Case material Steel Case diameter 42.0 mm Water resistance 20 ATM Crystal Mineral Glass Dial Black, Blue Bracelet/strap Bracelet material Rubber, Steel Bracelet color Black, Blue, Steel Clasp material Steel Functions Functions Date, WeekdayPopu...