Seiko Bullhead 6138-0040

A Seiko 'Bullhead' Chronograph Automatic stainless steel gentleman's bracelet wristwatch, Ref. 6138-0040, circa April 1976, with signed and jewelled 6138B caliber movement, the signed black dial with luminous baton hour markers, two blue subsidiary dials and day and date apertures, the signed case back detailed '6138-0040' and '644157', the bracelet with signed foldover clasp, case width 4.4cm.