We are pleased to present this important complication with its original Patek Philippe winding box, Patek service history, spare black alligator strap, stamped warranty certificate and stylus. Purchased at the prestigious Geneva boutique in Oct 2000, this ref.3940 in solid platinum is one of the slimmest perpetual calendars in the world, and the benchmark complication. This rare perpetual calendar is the absolute last word in understatement, the silver opaline dial gives nothing away about the most of precious and rare of case materials and even legendary PP calibre 240 Q is hidden behind a solid platinum case back (the platinum 3940's were never supplied with sapphire backs). In absolutely superb condition and fitted to a brand new PP crocodile strap with platinum folding clasp.