Patek Philippe Vintage 18K yellow gold Ellipse with classic blue dial. Reference 3548/1 circa 1975 .32mm X 27mm case with attached original Patek Philippe flexible mesh link bracelet that is the 7-1/2" long. Beautiful Blue dial with applied gold markers. 18 jewel manual wind Patek Philippe movement is running and functioning well, comes in Vintage Patek Philippe Box. Case stamped Patek Philippe & Co Geneve Swiss 18K 2712487, 3548 1. Movement marked Patek Philippe & Co Geneve 18 Jewels No. 1211373, 23-300 PM.