22. 22Y Patek Philippe. A rare stainless steel manual wind wristwatch Patek Philippe. Rare stainless steel wristwatch mechanical movement Model: Calatrava Reference: 96 Date: Circa 1935 Movement: Jewelled manual wind, Seal of Geneva, No.826588 Dial: Silvered, polished pointed baton hour markers, gilt outer dot minute divisions, engine turned subsidiary dial at 6 for running seconds, polished lance hands Case: Brushed round, snap on back, inside back stamped FB for François Borgel, No.610105/27 Strap/Bracelet: Black lizard leather Buckle/Clasp: Gold plated buckle Signed: Case, dial & movement Size: 31mm In 1932, the year the Stern Family became the owner's of Patek Philippe, the ref. 96 was launched. With its timeless proportions that pay homage to the era's Bauhaus, Art Deco, and Modernism styles the watch remains as stylish today as when it was first designed. It is quintessentially 1930s and yet effortlessly contemporary. Patek Philippe produced the reference 96 for four decades from 1932 to 1973. It was not only the first of the well loved Calatrava line of dress watches, but was also the first model to be marked by a numbered reference by Patek. The model was later replaced by the reference 3796. Only around 95 timepieces were manufactured in stainless steel.