RARE Seiko Credor Tank Quartz Vintage 1981 Women's Watch Leather | eBay,Seiko Credor Tank (14K gold bezel) [Ref: 6730-5090] BMBY: April 1981 Movement: Quartz Case: 31mm x 25mm, only 3mm thickness Strap: comes with a brown and black snake-skin leather, 20mm lugs All,Seiko Credor Tank (14K gold bezel) [Ref: 6730-5090] BMBY: April 1981 Movement: Quartz Case: 31mm x 25mm, only 3mm thickness Strap: comes with a brown and black snake-skin leather, 20mm lugs All,WTS] Seiko Credor Tank Ref. 6730-5100 14K yellow Gold, NOS : r/Watchexchange,1985 Credor Lineacurva | Seiko Design 140