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. 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
- Price: $5,599
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
- Original, unpolished case with sharp original facets — not a polished-out example
- Original tritium dial with even, honest patina — the look collectors chase
