A Seiko 'Helmet' Chronograph Automatic stainless steel gentleman's bracelet wristwatch, Ref. 6139-7100, circa December 1975, with signed and jewelled 6139B movement, the signed white dial with black baton hour markers, subsidiary dial and day and date apertures, the case back detailed '6139-7100' and '503747', the bracelet with signed foldover clasp, case diameter 4cm.
