New version of the most known Patek Philippe complication: the ultra thin self-winding Perpetual Calendar, now in yellow gold. The timeless classic design of the original Ref. 3940 case and dial first introduced in the mid 1980's has been kept and adapted in a larger more contemporary size with a diameter of 37,20mm (instead of 36 mm). The elegance of the ultra thin case is enhanced by a slightly new enlarged size. The new Ref. 5140 replaces the Ref. 3940. Day, date, month, leap year by hands Moon phases and am/pm indicator Strap: alligator with large rectangular scales, hand-stitched, shiny black Opaline-white dial, gold applied hour markers Fold-over clasp Interchangeable full back and sapphire crystal case back Water resistant to 25 m White gold Case diameter: 37.2 mm PLEASE CALL FOR PRICE