First launched in 1978, the Quantime Perpetuel* by Audemars Piguet was the worlds thinnest automatic perpetual calendar. One of only 362 examples in rose gold, this reference 25657 captures much of the appeal of the earliest pieces, with its classic "Audemars Piguet" signature, crisp white dial, and moonphase.

Created in 1977, the lines of the Quantime Perptuel were penned by Jacqueline Dimier, who is considered by some as the protg of the legendary . The perpetual calendar indications are laid out in an intuitive manner. The date and day are shown at 3 and 9 oclock respectively, with the months displayed at 12 oclock. A moonphase indication is placed at 6 oclock, with graduations for the moon position just above.

One of only 362 examples produced, this rose gold Quantime Perptuel reference 25657OR is a particularly early example of the reference, as evidenced from several key features. For example, the Audemars Piguet font is flat and restrained, imbuing this piece with a certain vintage appeal. Later versions of the same reference are known to have the more contemporary font, giving them a distinctively more modern appearance.

Keen-eyed collectors will notice the slightly recessed sub-dials, which are outlined with a single black line, giving a satisfying level of depth to the overall design and creating interesting effects when they interact with the light. This is a feature that is lost in subsequent iterations. Evidence suggests that the dial was manufactured by Stern Crations, the storied manufacturer which also produced dials for the and the , among others.

This Quantime Perpetuel Automatique is powered by the Caliber 2120/2, derived from Jaeger-LeCoultres legendary . The Caliber 2120 was an initial project of Jaeger LeCoultre in 1967, funded and contributed by Audemars Piguet, and famous for its adoption by Audemars Piguet, Patek Philippe and Vacheron Constantin.

If sold within the United Kingdom, this Quantime Perptuel Automatique 25657OR watch will be subject to 20% VAT.

Closer look

This Audemars Piguet Quantime Perptuel is in very good condition throughout. Light superficial marks can be found on the case and lugs consistent with minimal wear. The hallmarks and engravings are crisp and well-defined.

The watch comes with a two-year warranty from A Collected Man, alongside a lifetime guarantee of authenticity.