Patek Philippe began production of reference 3448 with the 27-460 Q calibre movement in 1962. Only 586 examples were made.
Patek Philippe confirm production of this watch in 1976 and its subsequent sale on 14 August 1981.
A similar watch is illustrated in Patek Philippe Wristwatches by Martin Huber and Alan Banbery, 2nd edition, p. 288. It is also featured in Ore d'Ore by Jader Barracca, Giampiero Negretti and Franco Nencini, p. 45.