At Auction: A Vintage Seiko 6139-7070 Chronograph Automatic Gents Watch. Stainless steel strap and case - 40mm. Blue dial with second sub dial. In working order.
SEIKO 6139-7070 Aquamarine - SERVICED – TiccTacc
SOLD: Seiko 6139-7070 Blue dial "Baby Jumbo" - YouTube
Vintage Seiko AUTOMATIC CHRONOGRAPH Men WATCH 6139-7070 - Etsy Finland