Omega Pre-owned Speedmaster Classic 'Two-Tone Dial' Ref 166.0285 from 1991 in good condition with signs of wear. This 18K yellow gold automatic watch (Cal. 1110) offers reliable performance and includes original papers, instructions, hang tag with reference number, original RRP and warranty card. Bracelet shows slight stretch; purchased June 1991 from jeweler Grimm in Bietigheim-Bissingen. Key attributes: Yellow | Gold | 18K yellow gold | Automatic movement Cal. 1110 with good performance (+4 s/d, 263° amplitude) | Omega bracelet in 18K yellow gold | Folding clasp | Bracelet with slight stretch | Two-tone gold-colored dial | Applied Roman numerals | Date display | Ref. 166.0285 | Dimensions & fit: Fits wrist sizes up to approx. 20.5 cm | Case diameter approx. 35 mm (measured without crown) | Composition & care: 75% gold, 25% other metals (18K yellow gold) | Wipe with a soft cloth; avoid exposure to chemicals; have the movement serviced by a professional watchmaker.