Watches
Description
Omega Speedmaster Reduced “Marui” Custom Build — Genuine OEM Parts (Ref. 3510.20)
Custom builds are a minefield of unknowns. Buyers are usually left guessing whether the dial, hands, and bezel on a “tribute” build are genuine Omega or aftermarket reproductions. This one removes that guesswork entirely — every non-original component is a brand-new, genuine OEM Omega part sourced direct from the factory, and the original factory parts packaging is included so you can verify it yourself.
Built on an authentic Omega Speedmaster Reduced 3510.50 donor watch, this piece has been reworked to the iconic “Marui” 3510.20 aesthetic using a new white dial, contrasting black handset, and a new tachymètre bezel — all genuine Omega. It has just undergone a full mechanical overhaul in September 2026 by an Omega-Certified Master Watchmaker, with the case and bracelet refinished to factory spec at the same time.
Product Details:
- Brand & Model: Omega Speedmaster Reduced “Marui” Custom Build (Base Ref: 3510.50 / Tribute Ref: 3510.20)
- Serial: 55,618,653
- Year: Circa 1997–1998
- Box & Papers: No Omega box or warranty card included
- Case & Dial:
- Material: Stainless steel, professionally refinished to factory spec
- Diameter: 39mm (excluding crown), 45mm lug-to-lug, 12mm thick
- Bezel: Brand-new genuine OEM Omega bezel, black tachymètre insert (P/N 082SU1132)
- Crystal: Genuine Hesalite, clean condition, Omega logo visible at center
- Dial: Brand-new genuine OEM Omega white 3510.20 dial (P/N 064PT2987004)
- Hands: Brand-new genuine OEM Omega black contrast chronograph handset
- Bracelet & Clasp:
- Bracelet ref: Original Omega Ref. 1469 with 811 end links
- Material: Stainless steel
- Fitment: Fits up to a 7.5″ wrist as-is, no extra links included
- Movement & Features:
- Caliber: Omega Calibre 1143 automatic chronograph
- Functions: Running seconds, 30-minute recorder, 12-hour recorder
- Service History:
- September 2026: Complete mechanical overhaul by an Omega-Certified Master Watchmaker — full disassembly, cleaning, lubrication, regulation, new gaskets, Witschi pressure testing
- Timing results: +6 sec/day, 285°–303° amplitude, 0.1 ms beat error
- Case and bracelet professionally refinished to factory spec in the same service
Condition & Warranty:
Movement running strong within chronometer-grade tolerances (+6 s/d, high amplitude); chronograph starts, stops, and resets precisely to zero; fully sealed and pressure tested. Case and bezel near-mint with razor-sharp factory bevels and crisp satin brushing. Hesalite crystal clean and polished. Bracelet excellent, tight links, minimal stretch, crisp secure clasp. Covered by a 1-year TamboWatches mechanical warranty.
Why Buy This Watch?
- Turn-Key & Fully Serviced: Freshly overhauled September 2026, running within COSC tolerances (+6 s/d), pressure tested, backed by a 1-year TamboWatches mechanical warranty
- 100% Factory OEM Components: No aftermarket dials or reproduction parts — original factory packaging for the new dial and bezel included to verify authenticity
- Master Refinishing: Detailed to near-mint factory spec by an Omega-certified watchmaker
- Full-Sized 7.5″ Bracelet: Fits as-is, no hunting down scarce spare links
