Audemars Piguet Perpetual Calendar Collection

Key Points from the Discussion

• The Audemars Piguet Royal Oak Perpetual Calendar Openworked in platinum holds a unique charm, with its dial and rotor design being particularly captivating, even when compared to newer perpetual calendar models.
• The Audemars Piguet Royal Oak Perpetual Calendar Openworked reference 25829PT distinguishes itself with a more classical approach to movement engraving compared to Vacheron Constantin's openworked perpetual calendar offerings, which tend to be more modern and less ornate.
• A key point of comparison between Audemars Piguet and Vacheron Constantin openworked perpetual calendars often revolves around case shaping for elegance, while a technical assessment of their movements presents a more complex evaluation.
• Audemars Piguet perpetual calendars are considered by some to be the most successful sub-category within the Royal Oak line, largely due to their integrated design without protruding pushers and their relatively slim profile, exemplified by the RD2.
• Early variants of the Audemars Piguet Royal Oak Perpetual Calendar Openworked in platinum, specifically the D-serial reference 25636PT, featured white chapter rings, distinguishing them from later F-serial reference 25829PT models which typically had blue chapter rings.
• Despite the technical prowess of the RD2, the choice of a slate dial over the iconic petite tapisserie, which was present in the full platinum prototype, is a point of contention for some collectors.