拍品专文
Production of this model, reference 2501, was launched in 1951.
A similar example is illustrated in Patek Philippe Wristwatches by Martin Huber and Alan Banbery, 2nd edition, p. 155.
A similar example is illustrated in Patek Philippe Wristwatches by Martin Huber and Alan Banbery, 2nd edition, p. 155.