Stainless steel skeletonized perpetual calendar wristwatch with moon phases, leap-year indication and bracelet.

Full set, box, papers. Audemars Piguet released its first perpetual calendar Royal Oak in 1983, 11 years after the original 'Jumbo' in 1972. The reference 25829 is faithful to the original model with a similar 39 mm diameter. The model was revealed in the second part of the 1990's in different metals such as stainless steel, pink or yellow gold, platinum and tantalum combined with another precious metal.