SIGNED PATEK PHILIPPE, GENEVE, CALATRAVA MODEL, REF. 4596/10, MOVEMENT NO. 1’413’587, CASE NO. 2’844’993, MANUFACTURED IN 1987

Reference 4596 was first launched in 1982 with flat bezel and was available in yellow or white gold. In 1986, Clou de Paris or hobnail bracelet version, such as the present watch was introduced to the market, and remained in production until 1990’s.