Patek Philippe Calatrava 1578

Patek Philippe Gentleman's Gold 'Calatrava' Wristwatch, Ref. 1578 18 kt., mechanical, circular silver-tone dial with gold Arabic numerals at the quarter hour and bar markers, sweep seconds, minute markers, spider lugs, logo crown, acrylic crystal, case dia. ap. 34.8 mm., aftermarket brown alligator strap and gold-tone metal buckle, dial, movement and case signed Patek Philippe, movement no. 703294 , case no. 679478, c. 1950-55. With signed box and papers.