SIGNED PATEK PHILIPPE, REF. 3878, MOVEMENT NO. 1'239'032, CASE NO. 2'809'724, MANUFACTURED IN 1982 Movement: Cal. 240 SQU, automatic, 27 jewels, signed Dial: Skeletonised dial, signed Case: Glazed display snap on back, 31 mm. diam., signed With: 18k gold Patek Philippe buckle, Extract from the Archives confirming production of the present watch in 1982 and its subsequent sale on 28 January 1986 and presentation box
Reference 3878, Patek Philippe's only automatic skeletonised wristwatch at the time, was in production from 1981 and later replaced by reference 5180. The estimated production is around 500 examples.