Reference 3448 is a worthy heir to Patek Philippe’s long lineage of perpetual calendars, which commenced with reference 1526. A pivotal watch in the history of horology, the latter was the very first serially produced perpetual calendar wristwatch that was launched in 1941. Reference 3448's similarly groundbreaking as it was the world’s first self-winding perpetual calendar wristwatch when it was introduced in 1962. The watch was fitted with Patek Philippe’s in-house caliber, the 27-460Q, which was patented by the firm. Furthermore, the caliber bears the prestigious Geneva seal underlining the painstaking hand finish it has gone through.

In production until the launch of its successor, the reference 3450 with leap year indicator, 586 examples were manufactured during its 20-year production run.

The reference 3448 is a highly collectible watch both for its high quality movement and its modern design aesthetic that was ahead of its time. The large, 37mm case diameter gives it a masculine presence on the wrist while giving a hint of things to come.

The present timepiece is a fine example of this timeless model. Dating from 1974 October 21, it features the third series dial with perlé minute markers and a date ring with large numerals. The dial is further enhanced with the sigma symbols on either side of the ‘Swiss’ designation at 6 o’clock, denoting that the baton numerals are in gold. Furthermore, the day and month indicators of the calendar are displayed in Italian – a rare and desirable configuration.