This Patek Philippe Calatrava 3565/1J the “IOS Million Dollar Associate” is a highly collectible vintage dress watch in 18ct yellow gold. Produced in few numbers for International Overseas Services (IOS) in the late 60s early 70s, it features an automatic movement, a 35 mm round case, and its distinctive integrated gold bracelet.
The clasp is unique to this model, making it instantly recognisable to collectors of IOS pieces. It comes complete with its original IOS presentation box and is in mint condition. A rare example of Patek Philippe’s bespoke collaborations, this watch offers historical interest and timeless style.
History of the IOS Million Dollar Associate Watch
In the 1970s, Patek Philippe created a limited series of Calatrava watches for IOS (International Overseas Services), an investment firm that presented these pieces to top-performing associates who achieved one million dollars in sales. Known as the “Million Dollar Associate,” these watches stand out for their subtle variations — including a unique clasp, dial, caseback and have become highly collectible due to their rarity, link to the IOS incentive programme, and Patek Philippe’s enduring reputation for fine watchmaking.