Patek Philippe Annual Calendar Ref. 5146P-001 The Patek Philippe ref. 5146P-001 is the annual calendar with moon phase and power reserve in a 39 mm platinum case with a grey dial. The platinum version was introduced in 2006 and is no longer part of Patek Philippe's collection. - Self-winding calibre with annual calendar: 315 S IRM QA LU in early production, later 324 S IRM QA LU - Annual calendar, moon phase, power reserve - 39 mm platinum case - Grey dial - Alligator strap with platinum folding clasp Full set. Maker: Patek Philippe. Reference: 5146P-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.