Produced between 1984 and 1991, the Audemars Piguet Quantieme Perpetual 25548 is a slim and well balanced perpetual calendar that offers collectors an opportunity to own a high complication at a relatively affordable price point. These watches measure 36mm and feature a thin case with a stepped down bezel and downturned lugs that wear comfortably on the wrist. This example is in fantastic original condition with a rich patina on the yellow gold and clear, deep hallmarks. The case shows some typical wear, but overall this is exactly how vintage collectors like to find a great watch.