The production of this model, reference 1463, was launched in 1940. Very few examples were produced in 18K pink gold.
Patek Philippe confirm production of this watch in 1950 and its subsequent sale on April 12th, 1951.
For an example of reference 1463 in stainless steel, see lot 297 in this sale.
A similar watch is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, 2nd edition, p. 267.