The Audemars Piguet Royal Oak Double Balance Wheel Openworked reference 15407BC.GG.1224BC.01 is a 41mm luxury timepiece distinguished by its 18-carat white gold case and integrated bracelet, both finished with a hammered frosted gold effect. This textured surface is created using the Florentine technique, where a diamond-tipped tool creates tiny indentations that produce a shimmering, diamond-like appearance. The watch features an octagonal bezel with eight hexagonal screws, a screw-locked crown, and glareproofed sapphire crystal on both the dial side and the caseback, ensuring water resistance up to 50 meters.
The technical core of the watch is the self-winding caliber 3132 movement, which is visible through the openworked slate grey dial. This movement is notable for its double balance wheel system, where two balance wheels and hairsprings are fixed on the same axis to improve precision and stability. It operates at a frequency of 3 Hz and provides a power reserve of approximately 45 hours. The dial is accented with pink gold applied hour markers and Royal Oak hands, both treated with a luminescent coating to enhance legibility.
General reviews of this reference emphasize its status as a mechanical masterpiece, frequently praising the high level of hand-finishing present on the skeletonized movement. Critics and enthusiasts alike highlight the unique visual impact of the frosted gold finish, which provides a striking contrast to the architectural complexity of the openworked movement. While the watch is lauded for its technical innovation and artistic execution, it is also noted for its exclusivity and high market demand, making it a significant piece for serious collectors of high horology.