Lot 11

Seiko. An unusual stainless steel automatic chronograph wristwatch with day and date
Bullhead, Ref.6138 0040, Case No. 603668, made circa 1973

Auction: 20 November 2025 from 14:00 GMT
Description
Cal.6138B self-winding 21 jewel movement, matt black dial with applied tritium baton indexes, white minute track, blue subsidiary dials for 12 hour and 30 minute chronograph registers, apertures for day and date in English, white/luminescent hands, orange chronograph seconds, substantial polished and satin finished case with screw-down numbered reverse, black tachymeter bezel, winding crown at 12 position flanked by chronograph pushers, on stainless steel Seiko Ref.ZC40S bracelet with folding clasp. Case, dial and movement signed.
Dimensions
Diameter 43mm.
