Seiko Prospex Black Series 1968 Mechanical Diver black 。Brand SEIKO Model Prospex Diver Scuba Gender Men\'s Material Stainless Steel / rubber Dial color black Movement Automatic Ref Number SBDC155/6R35-01X0 Serial Number 41**/5500 Functions Date Accessories No accessories Case size About 42mm (1.7inch) (not including the crown) Wrist size About 21cm (8.3 inch) Lugs width 20mm(0.8 inch) Keeping time +36 sec/day(measured value)　※Reference value State of the wound Glass No damage Case a few scratch Bezel a few scratch Belt/Bracelet Light damage Hand No damage Dial No damage Buckle some light scratch CL Number 948836　 439 260317 YY Condition Rank Body rank AB Belt/Bracelet rank B+ Condition RANK Explanation N [Mint] Item has never been used. S [Beautiful] Item is like new withvery slight signs of use. A [Excellent] Item has clearly been used,but has no significant scratches or wear. AB [Great] Item has slight surface scratches or slight wear,but looks great. B [Good] Item shows scratches or wear that is visible when worn on wrist. BC [Fair] Item is not in perfect working order or slightly damaged. C [Poor] Item cannot be used as-is.Repair needed or used as parts.