Patek Philippe S/S Blue Dial Power Reserve Nautilus 3712/1A

A Very Rare Stainless Steel Power Reserve Moonphase Nautilus, blue ribbeddial with index batons, stainless steel bracelet, automatic movement, exhibition back, water resistant to 60m, power reserve indicator between 10 and 11 0\'clock, subsidiary seconds at 4 0\'clock, date and moonphase indicator at 7 0\'clock, never been worn - new old stock, comes with an original box and papers dated May 2006The 3712/1A was only made for a short period of time, the watchalso comes with an Extract from the Archives dated March 2011