The 1994 Omega Speedmaster Moonwatch 3590.50 sits in one of the most collectible sweet spots of the Speedmaster timeline—right before Omega transitioned into more modern references. It carries the classic 42mm asymmetrical case, hesalite crystal, and aluminum tachymeter bezel, staying true to the exact formula that made the Speedmaster NASA-qualified and space-proven. Produced throughout the early ‘90s, this reference is widely seen as the direct predecessor to the later 3570.50, making it a key transitional piece in Moonwatch history.

What really defines a 1994 example is the tritium lume, which often ages into a warm creamy patina that collectors actively hunt for. Inside, it runs the manual-wind caliber 861, one of the most proven chronograph movements ever made—simple, durable, and historically tied to the Speedmaster’s legacy. Compared to newer sapphire or METAS-certified versions, the 3590.50 feels more raw and authentic—lighter, slightly more vintage in execution, and closer to the original Moonwatch experience.

Information:

Case Reference: 3590.50

Serial: 48,317,XXX

Dial/hands: Tritium

Case: 42mm - Stainless Steel

Bracelet: 1479 Clasp code with 812 endlinks - Stainless Steel

Movement: 861 – Manual

Glass: Hesalite

Accessories: No box or papers - watch only

Lug Width: 20mm

Functions: HM, small seconds, chronograph

Bracelet size: 7"

Condition:

Case has light wear with some scratches. Bracelet has minimal light wear. Dial, hands, and crystal have light wear.