![SEIKO BULLHEAD CHRONOGRAPH AUTOMATIC Ref 6138-0040 JAPAN J Automatic Vintage watch Cal. 6138B *** COLLECTORS *** Seiko Vintage watches - Watches83 SEIKO BULLHEAD CHRONOGRAPH AUTOMATIC Ref 6138-0040 JAPAN J Automatic Vintage watch Cal. 6138B *** COLLECTORS *** Seiko Vintage watches - Watches83](https://watches83.com/32095-thickbox_default/seiko-bullhead-chronograph-automatic-ref-6138-0040-japan-j-automatic-vintage-watch-cal-6138b-collectors-.jpg)
SEIKO BULLHEAD CHRONOGRAPH AUTOMATIC Ref 6138-0040 JAPAN J Automatic Vintage watch Cal. 6138B *** COLLECTORS *** Seiko Vintage watches - Watches83
![Seiko Bullhead Chronograph, Japan, c. 1974 | lot 31 | Montres Vintage at Auctionata Paddle8 AG | Auction.fr | English Seiko Bullhead Chronograph, Japan, c. 1974 | lot 31 | Montres Vintage at Auctionata Paddle8 AG | Auction.fr | English](https://s3-eu-west-1.amazonaws.com/auctionmediaphotos/0/4/0/1461638572952041.jpg)
Seiko Bullhead Chronograph, Japan, c. 1974 | lot 31 | Montres Vintage at Auctionata Paddle8 AG | Auction.fr | English
![Collection of Seiko | A La Clinique Horlogère, réparation et vente de montres, Porrentruy, Jura, Suisse Collection of Seiko | A La Clinique Horlogère, réparation et vente de montres, Porrentruy, Jura, Suisse](https://www.cliniquehorlogere.ch/assets/fichiers/images/267/1474464704_Seiko_Speedtimer_calibre_6138_B_Bullhead.jpg)
Collection of Seiko | A La Clinique Horlogère, réparation et vente de montres, Porrentruy, Jura, Suisse
![Seiko Bullhead Vintage Chronograph, Ref. 6138 | lot 153 | L'univers des Montres at Auctionata Paddle8 AG | Auction.fr | English Seiko Bullhead Vintage Chronograph, Ref. 6138 | lot 153 | L'univers des Montres at Auctionata Paddle8 AG | Auction.fr | English](https://s3-eu-west-1.amazonaws.com/auctionmediaphotos/b/2/e/1446293515920088.jpg)
Seiko Bullhead Vintage Chronograph, Ref. 6138 | lot 153 | L'univers des Montres at Auctionata Paddle8 AG | Auction.fr | English
![Seiko Bullhead Chronograph, Ref. 6138, Japan, C. 1972 | lot 84 | Chrono24: Montres de Luxe at Auctionata Paddle8 AG | Auction.fr | English Seiko Bullhead Chronograph, Ref. 6138, Japan, C. 1972 | lot 84 | Chrono24: Montres de Luxe at Auctionata Paddle8 AG | Auction.fr | English](https://s3-eu-west-1.amazonaws.com/auctionmediaphotos/c/d/d/1435475210212398.jpg)