Omega Pre-owned Speedmaster Stainless Steel Watch 3510.50. Condition: Good, but used — Great Condition. Rank: Used A (good used condition with slight scratches and stains). Before purchasing, please refer to the images for the exact condition of the item. Key attributes: Black | Stainless steel | Automatic movement | Automatic movement | Stainless steel case and bracelet | Black dial | Stainless steel finish | Speedmaster silhouette | Dimensions & fit: Standard fit suitable for most wrists. | Composition & care: Stainless steel | Wipe with a soft cloth. Avoid exposure to strong chemicals and magnets. Have the movement serviced by a professional watchmaker as needed.