Patek Philippe Calatrava 3513/1

(ROMAN CALATRAVA – GRAY GOLD REF. 3513/1), circa 1975 Elegant round watch in 18-carat (750 thousandths) white gold with clipped back (stamped, signed and numbered). Smooth bezel and original crown. Silvered dial (with slight traces) with Roman numerals and blackened steel spear hands. Original ribbon strap with doormat mesh integrated into the watch, buckle with applied Patek Philippe logo (accident). Movement: Mechanical automatic winding caliber signed PATEK PHILIPPE / 175 Swiss. Works but foresee revision. Diameter: 30 mm. Condition: Fine (gross weight 76.1 g)