No Reserve - Omega Seamaster Railmaster 40MM Grey Dial Leather Strap (220.12.40.20.06.001)
The seller represents this timepiece as being in very good condition, showing very light signs of wear. It includes the box, a Pictograms card, a Master Chronometer card, and additional items.
Design. The 40mm symmetrical stainless steel case has a fully brushed finish that leans into the watch's workwear roots, with a wave-edged design on the caseback. The star is the vertically brushed silver-grey dial, whose fine linear texture evokes industrial metal. It carries printed Arabic numerals at 3, 6, 9 and 12, recessed hour markers, and brushed steel hands — all filled with "vintage" beige-toned Super-LumiNova that lends the piece a warm, retro character echoed beautifully by the brown leather strap. A transferred beige "Railmaster" signature on the dial completes the heritage touch. A domed, anti-reflective sapphire crystal protects the face.
Movement. Inside is the Omega Co-Axial calibre 8806, a Master Chronometer–certified automatic movement. It offers roughly 55 hours of power reserve and features Omega's Si14 silicon balance spring, delivering exceptional resistance to magnetic fields greater than 15,000 gauss — a fitting nod to the original Railmaster's anti-magnetic purpose. The Master Chronometer standard, certified by METAS, tests the fully cased watch for precision, magnetic resistance, and performance beyond traditional COSC certification. A solid screw-in caseback uses Omega's patented Naiad Lock system to keep the Seahorse logo perfectly aligned.
Specifications
- Reference: 220.10.40.20.06.001
- Case: Stainless steel, 40mm (approx. 12.65mm thick)
- Bezel: Fixed, brushed steel
- Crystal: Domed anti-reflective sapphire
- Dial: Vertically brushed silver-grey with beige-toned lume and "Railmaster" text
- Movement: Omega Co-Axial calibre 8806, automatic, Master Chronometer (METAS certified)
- Power reserve: ~55 hours
- Anti-magnetic: >15,000 gauss
- Water resistance: 150m / 500ft
- Strap: Brown leather with buckle
- Lug width: 20mm
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- Reference Number: 220.12.40.20.06.001
- Case Material: Steel
- Bezel Material: Steel
- Case Diameter: 40mm
- Crystal: Sapphire Crystal
- Dial: Grey
- Dial Numbers: Arabic Numerals
- Bracelet Material: Leather
- Movement: Automatic
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No Reserve - Omega Seamaster Railmaster 40MM Grey Dial Leather Strap (220.12.40.20.06.001)
No Reserve - Omega Seamaster Railmaster 40MM Grey Dial Leather Strap (220.12.40.20.06.001)
| Year: | Unknown |
| Condition: | Very Good |
| Papers | No |
| Box: | Yes |
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No Reserve - Omega Seamaster Railmaster 40MM Grey Dial Leather Strap (220.12.40.20.06.001)
No Reserve - Omega Seamaster Railmaster 40MM Grey Dial Leather Strap (220.12.40.20.06.001)
| Year: | Unknown |
| Condition: | Very Good |
| Papers | No |
| Box: | Yes |
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