SEIKO TANK ROMAN INDEX Ref. 5P31-5D80 Quartz Seiko movement Cal. 5P31 All original part (head & buckle) New leather strap (lizard) Size 27 x 37 mm Lug width 16 mm Vintage and,Seiko Spirit Tank [Ref: 5E31-5B50] Quartz BMBY: June 1992 Serial: 260001 Case: 25mm x 31mm (men's) Strap: brand new, 18mm All original watch head Made in Japan Newly serviced Price on request,SEIKO SPIRIT 5E31-5B60 メンズクオーツ - メルカリ,Vintage Seiko 5E31-5B60 Tank Goldflake Spirit Quartz Watch NEW BATTERY Japan BNB