In commemoration for the 120^th anniversary of Audemars Piguet in 1995, the brand released a very special Royal Oak Reference 2581OR, limited to 120 examples. The Quantieme Perpetual Royal Oak features a perpetual calendar with moon phases, and is completely crafted from 18k rose gold. The complimentary salmon dial also has a leap year and week indicator, a first for the brand. The commemorative watch is housed in the collector favorite 39mm “Jumbo” case which has an impressive 10mm thickness, considering the complications and sapphire case back. The complicated movement is fitted with a 21k yellow gold rotor which has “120” elegantly hand-engraved and skeletonized in it for commemoration. This timepiece presents a wonderful and rare opportunity to own an impressive complication housed in the ever sought-after Royal Oak watch.