The presently offered timepiece is a beautiful example of the reference 3448 bearing the typical dial with a dense printed signature which appeared on models sold after 1971. Indeed, the present watch was probably one of the very first pieces produced with this new dial as it was sold on February 1971. The date font around the moon-phase aperture is also recognizable and turns upside down at 9 and 25 to facilitate the date’s lecture.
Reference 3448, introduced into the market in 1962, was at the time the first self-winding perpetual calendar wristwatch. According to literature, a total of 586 examples were made, the majority in yellow gold cases. Few watches have been cased in white gold and only two examples in platinum are known to date.
Reference 3448 was fitted with the celebrated calibre 27-460, amongst the most sophisticated and lavish automatic movements ever made. It was later upgraded with Patek Philippe's patented perpetual calendar mechanism fitted on the movement plate underneath the dial and renamed 27-460 Q.
Reference 3448 is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 288 and in Ore d'Oro by Jader Barracca, Giampiero Negretti and Franco Nencini, p. 45.