Omega Speedmaster 3592.50 Saph Back 1992

Omega Speedmaster Sapphire Caseback, 3592.50, 1992
Serial: 48288076
Circa: 1992
Reference No.: 3592.50

CASE: 42mm Stainless Steel, lyre lug moonwatch case, acrylic crystal & sapphire caseback, black tachymeter bezel (DNN)

DIAL: Black matte dial with three chronograph registers, tritium hour markers

MOVEMENT: Caliber 863, hand wound mechanical chronograph, 17 jewels

BRACELET: Original Omega stainless steel bracelet Ref 1479/812

CONDITION REPORT: Mint Condition, unpolished and nice even cream patina on the dial. This early example retains its beautiful and original thick font DNN tachy bezel. The movement was fully overhauled by our Omega certified watchmaker in August 2026 and comes with a two year warranty.

NOTES: According to the Omega Museum (archives not ordered) the present watch was manufactured November 3, 1992 and delivered to Switzerland.

Beginning in 1980, Omega was the first brand to have a sapphire display back on its serially produced watches and it was on a white and yellow gold limited edition Speedmaster. The first stainless steel version 345.0808 was released in 1985 and the 3592.50 is the successor reference this that one. These sapphire caseback models came with a decorated movement and a metal cam vs delrin to showcase a more prestigious movement through the caseback. This 863 caliber was initially called the 861L (luxe).