AUDEMARS PIGUET ROYAL OAK - QUANTIEME PERPETUAL, REF.25820SP, A RARE STAINLESS STEEL AND PLATINUM PERPETUAL CALENDAR BRACELET WATCH WITH MOON PHASES AND LEAP YEAR DISPLAY, MADE IN 2004AUDEMARS PIGUET | ROYAL OAK - QUANTIEME PERPETUAL, REF.25820SP, A RARE STAINLESS STEEL AND PLATINUM PERPETUAL CALENDAR BRACELET WATCH WITH MOON PHASES AND LEAP YEAR DISPLAY, MADE IN 2004Case No: 252, E89089Calibre: 2120/2802, automatic, signedDial: White tapisserie dial, signedCase: 39mm, stainless steel, platinum bezel, transparent case back, signedBracelet: Stainless steel, folding clasp, approximately 186mm, signedAccompaniments: Maker's digital Extract from the Archives and travel pouch愛彼，「Royal Oak - Quantieme Perpetual」，25820SP型號，罕有精鋼及鉑金自動上弦萬年曆鏈帶腕錶，配月相及閏年顯示，年份約2004。附原廠電子候補資料庫精萃及攜行錶袋。The Royal Oak is no stranger to the watch collecting realm. This model has reversed the whole watchmaking industry in the 70s with its unexpected octagonal bezel and the tapisserie dial. To this day, it is still influencing the market as it is widely considered as the first luxury sport watch. 2022 is the 50th anniversary of Royal Oak. To commemorate such remarkable history and achievements, we are pleased to present a special Royal Oak in this sale. The watch offered is not a standard Royal Oak, it comes with a perpetual calendar, or as Audemars Piguet refers to it: Quantieme Perpetual. The watch recognizes the month lengths as well as leap year so that its wearer does not need to adjust it in at least 100 years. The present watch, however, has a more distinctive feature. It goes by the reference 25820SP, which stands for the fact that it is bimetal and made of stainless steel case with 950 platinum bezel, a unique mirror finishing aesthetic impact. According to Audemars Piguet's Extract from the Archives, the watch is made in 2004 and further research shown that no more than 25 pieces were made for this reference 25820SP with white dial for over 17 years of its production. This is the second time of 25820SP in white dial that ever appeared in public auction. Fresh to the market in unpolished condition, the present watch is undoubtedly the ultimate grail for any aficionados to acquire.