Accompanied by a Patek Philippe Extract from the Archives confirming production of this watch in 1919 and its subsequent sale on 9 November 1920.
Production of the reference 1450 was launched in 1940. The model is illustrated in Patek Philippe Wristwatches by M. Huber & A. Banbery, 1st edition p. 113, pl. 158, 2nd edition p. 137, pl. 196 and in Armbanduhren by G. Negretti, F. Nencini, p. 217, pl. 156-157.