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.

Information:

Reference: 3592.50

Serial: 48,273,XXX

Year: November 1991

Dial: Tritium

Hands: Tritium

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

Case Size: 42mm - Stainless Steel

Lug Width: 20mm

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

Functions: HMS, Chronograph

Box and Papers: Inner/outer boxes, no warranty card

Crystal: Hesalite (Front) Sapphire (back)

Bracelet size: 7.5”

Condition:

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).