Omega Pre-owned Speedmaster 3513.50. Condition: Used (very good). Rank A Used - a few traces of usage; some scratches/dirt can be seen but overall in very good condition. Glass scratches: None. Dial scratches/deterioration: None. Hand scratches/deterioration: None. Case scratches: Insignificant. Bezel scratches: Insignificant. Crown scratches: Insignificant. Case back scratches: Insignificant. Bracelet scratches: Insignificant. Maintenance: Polished. Key attributes: Black | Stainless steel | Chronograph | Date display | Self-winding (automatic) movement | Sport style | 39mm case diameter | Black dial | Stainless steel bracelet | Polished finish | Dimensions & fit: Fits wrist size approximately 15.5 cm / 6.1 in | Composition & care: 100% Stainless steel | Wipe clean with a soft cloth. Have movement serviced by a qualified watchmaker as needed. Avoid prolonged contact with water.