Seiko Bullhead 6138-0040

A Seiko 'Bullhead' Chronograph Automatic stainless steel gentleman's bracelet wristwatch, Ref. 6138-0040, circa November 1976, with signed and jewelled 61398 caliber movement, the signed black dial with luminous baton hour markers, two blue subsidiary dials and day and date apertures at 6 o'clock, the signed case back detailed '6138-0040' and '6N3147', the bracelet with signed foldover clasp, case diameter 4.4cm, with Seiko box.