1993 Omega Speedmaster Moonwatch 3592.50 Hesalite Sandwich Apollo XI

The Omega Speedmaster Professional 3592.50 is a highly regarded variant of the iconic "Moonwatch," blending the classic design and history of the Speedmaster with modern touches. Produced during the late 1980s to mid-1990s, this model features a hesalite crystal on the front and a sapphire case back, allowing a view of its beautifully decorated Caliber 863 manual-winding movement, a step up from the traditional Caliber 861 in terms of finish and refinement. The 42mm stainless steel case maintains the signature asymmetrical design, tachymeter bezel, and tri-compax chronograph layout that have made the Speedmaster a staple among watch enthusiasts. Renowned for its versatility, reliability, and connection to NASA's space missions, the 3592.50 remains a favorite among collectors for its unique balance of functionality, heritage, and craftsmanship.

Reference: 3592.50

Serial: 48,304,XXX

Year: 1993

Dial/hands: Tritium

Strap: 1479 clasp code paired with 812 end links - Stainless Steel

Case Size: 42mm - Stainless Steel

Lug Width: 20mm

Movement: 863 (17 Jewel) - running (-3 s/d 290 amp)

Functions: HMS, Chronograph

Box and Papers:No boxes or warranty card - watch only

Crystal: Hesalite (Front) Sapphire (back)

Bracelet size: 7.25”

Case has light normal wear with nothing notable. Bracelet has light normal wear with nothing notable. Tritium dial lume has became a nice dark beige patina with no wear on the dial. Hands have aged the same as the dial into a nice dark beige. Couple light scratches on the crystal. Watch is running (-3 s/d 290 amp).

Founded in 1848 by Louis Brandt in Switzerland, Omega has grown into one of the most respected and innovative names in watchmaking. The brand’s early focus on precision earned it accolades at international observatories and competitions, setting the stage for decades of horological achievement. Omega became the official timekeeper for the Olympic Games in 1932, and in 1969, the Speedmaster Professional—nicknamed the "Moonwatch"—made history as the first watch worn on the lunar surface during NASA’s Apollo 11 mission. Omega’s innovations continued with the introduction of the Co-Axial escapement in the late 1990s, a groundbreaking movement that dramatically reduced friction and improved long-term accuracy.