Patek Philippe Nautilus Moon Phases Ref. 5712/1A-001 The Patek Philippe Nautilus ref. 5712/1A-001 adds a power-reserve indicator, moon phase, pointer date and small seconds to the steel Nautilus, driven by the ultra-thin micro-rotor Calibre 240 PS IRM C LU. Its horizontally embossed dial shades from blue to black. The reference is no longer part of Patek Philippe's collection. - Self-winding micro-rotor Calibre 240 PS IRM C LU - Power reserve, moon phase, pointer date and small seconds - 40 mm steel case, water resistant to 60 metres - Blue, black-gradated dial, horizontally embossed - Integrated steel bracelet with Nautilus fold-over clasp Full set. Maker: Patek Philippe. Reference: 5712/1A-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.