A timeless beauty from Patek Philippe, this ultra thin dress watch - reference 3571/1 - from the 1960s is done in 18kt yellow gold.  It has a 26mm x 26mm case which houses an 18 jewel manual winding movement - cal 175.  The original textured blue dial is in excellent original condition and has applied Roman numeral hour markers.  The original mesh bracelet is in excellent condition, will fit a 7 1/2" wrist and has the original Patek Philippe buckle.  The watch is in excellent overall condition and has been recently serviced.