Up for sale is my SEIKO Automatic Diver 6306-7000. This is the Japanese Domestic Market cushion case diver produced in very limited quantity between 1976-1977 as opposed to the latter 6306-7001 model. It is powered by 21-jewel 6306 movement with second-setting function (hack).
Production date: July 1976 (early production model).
- Width: 44 mm (excludes crown).
- Thickness: 13 mm.
- Lug: 22 mm.
Original dial and hands in very good condition (sorry for the scratches on crystal). Lume on index markers and hands have aged to cream color.
Bezel rotates bi-directionally and clicks firmly with no play.
Bezel insert has scratches. The black color on the insert has faded. It turns to blue under direct light.
Original crystal has scratches but untouched.
Case and case back are in good condition with scratches and swirlies, but untouched. Edges, corners, and original factory machining lines on both top and back surface are still visible. The wave logo on the case back still retains its grainy background.
Movement and day-date setting mechanism are in good condition. Fully serviced by SEIKO Service Center, Jakarta on December 2011. Accuracy is within original factory specifications.
All gaskets (crystal, crown, caseback, and bezel) have been replaced with brand new genuine SEIKO gaskets on January 2012.
Original crown locks in 2.5x full turn.
Not water-pressure tested. Water resistant is unknown.
Comes with a used SEIKO DAL1BP 22 flat-vent rubber strap (JDM version of Z 22).
The bad: Case, bezel insert, and original crystal have scratches.