Speedmaster Professional Moonwatch

For sale is an Omega Speedmaster Professional Moonwatch, reference 3573.50.00, offered as a complete set with original Omega box and warranty documentation. Known by collectors as the “Sapphire Sandwich,” this reference pairs the classic 42 mm asymmetric stainless-steel Speedmaster case and black tachymeter bezel with a sapphire crystal and sapphire exhibition caseback. The black dial retains the traditional three-register Moonwatch layout, with chronograph minutes at 3 o’clock, running seconds at 9 o’clock, and chronograph hours at 6 o’clock. The watch is powered by the manual-wind Omega Calibre 1863, the display-back variation of the historic Lemania-based Moonwatch movement family. Its visible copper-colored movement architecture and traditional hand-wound chronograph operation make the 3573.50.00 a sought-after transitional Speedmaster for collectors who want the classic design with a sapphire display back. PLEASE NOTE* We photograph with powerful macro lenses and studio lights, and this can reveal swirls, dust, and minor damage that is not noticeable under normal conditions. Please excuse any dust or other debris we may have missed while photographing. Thank you!