Watches
Description
This is a rare Omega Speedmaster Professional Reference 3590.50, the Apollo XI 20th Anniversary unnumbered series (circa 1989-1990) — a neo-vintage icon powered by the legendary Calibre 861 manual-wind movement, with an original tritium dial that’s aged to a beautiful, creamy patina.
This watch has just returned from a full mechanical overhaul by an Omega-certified master watchmaker as of March 2026, with fresh timegrapher results to back it up. New OEM pushers and crown(original pushers and crown included).Sale includes watch, Uncle Seiko bracelet, and service documentation only — no original box or papers.
Learn more at OmegaWatches.com
Product Details:
- Brand & Model: Omega Speedmaster Professional, Apollo XI 20th Anniversary unnumbered series
- Reference: 3590.50 (145.0022)
- Year: 1989-1990
- Box & Papers: Not included — service documentation only
- Case & Dial:
- Material: Stainless steel
- Diameter: 42mm
- Case: Unpolished. Lyre lugs remain sharp with distinct, original facets. Honest signs of wear (minor marks/flea bites) consistent with age, preserving collector value.
- Bezel: Original tachymetre bezel, minor damage visible between 10 and 11 o’clock (see macro photos)
- Dial: “T Swiss Made T” tritium dial, even patina across all markers, original
- Bracelet & Clasp:
- Bracelet: Uncle Seiko US1450 President-style (currently fitted, not original Omega) — offers the look of the rare 1450/808 bracelet with modern solid-link durability
- Wrist size: Currently sized for 7.5″
- Movement & Features:
- Caliber: 861, manual wind
- Functions: Chronograph starts, stops, and resets to zero with crisp mechanical precision
- Service History: Full mechanical overhaul, March 2026, by an Omega-certified master watchmaker — timegrapher results: 317° amplitude, +4 seconds/day
- Crown and pushers replaced, originals included.
- Pressure tested
Condition & Warranty:
Unpolished case with honest, age-appropriate wear and a small bezel chip at 10-11 o’clock, disclosed in the macro photos. Original tritium dial with even patina. Covered by a 1-year TamboWatches mechanical warranty.
Why Buy This Watch?
- Rare Apollo XI 20th Anniversary unnumbered series reference
- Fresh March 2026 full service by an Omega-certified master watchmaker, with verified timegrapher results. Watch passed pressure test.
- Original, unpolished case with sharp original facets — not a polished-out example
- Original tritium dial with even, honest patina — the look collectors chase
