Patek Philippe. A Rare Limited Production Pink Gold and White Gold Wristwatch with Date, Moon Phases and Power Reserve Indication, Made Exclusively for the Hong Kong MarketModel/Reference: Nautilus/5712GRMovement No: 5738361, signedCase No: 4884347Year: 2013Calibre: 240 PS IRM C LU, automatic Dial: Gradient brown with embossed dial, signed Case: 43mm, 18k rose gold and 18k white gold, transparent case back, signed Strap: Endangered species, Nautilus folding clasp, signedAccompaniments: Patek Philippe box, certificate, setting pin, and extra strap注脚百達翡麗，「Nautilus」5712GR型號，精緻玫瑰金及白金自動腕錶，配日期、動力儲存及月相顯示，2013年。特別為香港市場製做。附原廠錶盒、證書、備用錶帶及調教筆。The Patek Philippe Reference 5712 was released in October 2006 to mark the 30th anniversary of the Nautilus collection. The model was available in stainless steel, pink gold or white gold and replaced the reference 3712 which had been in production from 2005 to 2006. According to research, the model was made in limited production especially for the Hong Kong market in 2010.