HMC 901 NHM

This is a version of the hand-wound HMC 901 calibre, excluding hour and minute hands, measuring 28.8 x 33.55 mm with a 6.25 mm height, 21,600 vph frequency, 28 jewels, and an 87-hour power reserve. It includes a flat hairspring, hand-finished double Moser stripes, a one-minute flying tourbillon with a skeletonised bridge, and a minute repeater. Created alongside MHC Manufactures Hautes Complications SA, it houses a minute repeater and tourbillon within a shaped calibre, utilizing two complex rectangular gongs. Additional: Tourbillon Escapement.