At the heart of this 44.8 mm platinum case — standing 12 mm tall — beats Caliber GS 36‑750 PS IRM, a manually wound mechanical movement of exceptional complexity. It delivers grande sonnerie, petite sonnerie, and a minute repeater that chimes on three classic gongs, accompanied by both a movement power reserve indicator and a dedicated strikework power reserve indicator, as well as a jumping small seconds.
The dial is a masterwork in itself: Grand Feu black enamel with a glazed finish, set on an 18K gold dial plate and dressed with gold applied Breguet numerals. The case is platinum throughout, offering interchangeable solid and sapphire crystal case backs, and is humidity- and dust-protected.
A shiny black alligator leather strap with square scales and hand-stitching completes the piece, secured by a fold-over clasp. Reference 6301P-001 represents one of the most demanding expressions within the Patek Philippe Grand Complications collection.
