Accompanied by Patek Philippe Extract from the Archives confirming production of the present watch in 1966 and its subsequent sale on 2 March 1967. It has never been offered in public before.
Production of reference 3440 was launched in 1961. The model is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 221, pl. 355.