Photo by Torsten Bolten (public domain), via Wikimedia Commons · shown: Speedmaster family photo
Speedmaster Moonphase
The Master Chronometer Moonphase Chronograph: a 44.25mm Speedmaster with a high-resolution photo-printed moon disc at six and the cal. 9904 Co-Axial automatic chronograph. Distinct from the Professional Moonwatch line: thicker, automatic, dressier.