Speake-Marin SM2m

Manual-winding version of the SM2, developed for the Marin 2 Mk1 Thalassa. While sharing the underlying architecture with the SM2 automatic, it required developing a new mainspring, mainspring barrel, barrel bridge, train bridge, main plate, and setting mechanism combined with calendar mechanism. Features hand-finished German silver bridges, over-sized jewels and screws, and an elegant double-ended swan's neck for fine regulation. Breguet over-coil chronometer balance. Contains 146 components.