Speedmaster Professional Moonwatch

“Moonwatch Professional 1861 (Hesalite)”

Reference 311.30.42.30.01.005 is the Big Box calibre 1861 Moonwatch that replaced 3570.50.00 in 2014 and ran until the 3861 generation arrived in 2021. The watch keeps the core 42 mm steel, black dial, Hesalite, closed-back formula, but is remembered for its updated bracelet and expanded Moonwatch…

Open in The Dial Atlas