Seiko 6309-7040

A Seiko Automatic 150m stainless steel cased gentleman's diver's wristwatch, Ref. 6309-7040, circa January 1980, with signed and jewelled 6309A caliber movement, the signed black dial with luminous hour markers and day and date apertures and detailed 'Water 150m Resist', the case with red and blue rotating bezel, the signed case back detailed '6309-7040' and '012992', case width 4.4cm, on a Seiko Z22 rubber strap.