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The Audemars Piguet Royal Oak “Jumbo” Extra-Thin Openworked 16204ST, a highly refined and technically impressive 50th Anniversary edition that showcases the brand’s mastery of skeletonization within the iconic Royal Oak design. The 41 mm stainless steel case retains the classic Jumbo proportions with a slim profile of approximately 8.1 mm, preserving the elegance that defines the original Royal Oak. The integrated bracelet features AP’s signature finishing with satin brushing and polished bevels, emphasizing the sharp geometry of the design. The openworked dial reveals the intricate architecture of the ultra-thin movement, with carefully skeletonized bridges finished by hand. Despite the complexity, the dial remains highly legible with applied hour markers and hands. This edition features the 50th Anniversary oscillating weight visible through the sapphire caseback. Powering the watch is the Audemars Piguet Calibre 7124, an ultra-thin automatic movement designed specifically for the new generation Jumbo. It offers approximately 57 hours of power reserve and showcases refined finishing throughout.