*NEAR MINT* SEIKO SPIRIT 5E31-5B50 Quartz White Dial Square Tank Men's Watch JPN | eBay,SEIKO SPIRIT ANTIMAGNETIC 5E31-5B50 クォーツ,Near MINT] Seiko Spirit 5E31-5B50 Gold Tank Quartz Mens Vintage Watch JAPAN | eBay,SEIKO SPIRIT RECTANGLE Ref. 5E31-5B50 Quartz movement Seiko Cal. 5E31 All original part (head) Size 28 x 37 mm Lug width 18 mm Vintage and very good condition #seiko #seikovintage #seikospirit #seikotextures #,Vintage Seiko Spirit 5E31 5A70 Men Quartz Wristwatch Japan Square Shape 36mm - Etsy,