SEIKO gents wristwatch with intermediate wheel chronograph in steel, Japan around 1975, self winding, screwed down case reference 6138- 8030, silvered dial with grey sub dials, day & date at 3, nickel plated movement calibre 61388, 21 jewels, later Seiko-box enclosed, diameter approx. 41 mm, overhaul recommended at buyer's expense, condition 2