PATEK PHILIPPE CALATRAVA. Mechanical watch in yellow gold. 1962 Ref. 3420J . Yellow gold case 750 no. 432407, 34 mm, silvered dial, baton hour-markers, gold hands, small seconds at 6 o'clock, hand-wound mechanical movement cal. 27 AM 400, calfskin strap, buckle. The strap is not original. Dedication on the back: "WITH GRATITUDE SADRUDDIN AGA KHAN".