REF. 3512J, MOVEMENT NO. 1'160'662, CASE NO. 324'468

Patek Philippe launched the reference 3512 in 1964 and it was in production until circa 1977. The cases for this model were made by Antoine Gerlach and are only 5mm thick. Patek Philippe advertised this watch as their "classic extra flat watch." This model came in many variations.