The groundbreaking reference 3448, launched in 1962, was the world's first self-winding perpetual calendar wristwatch. It replaced the earlier, manually-wound references 1526 and 2497. Within beats the exquisite caliber 27-460 Q ("Q" for quantième), which built on Patek’s first automatic caliber 12-600 AT introduced in 1953. After almost two decades of 3448 production, it was replaced by the reference 3450 which featured a leap year indicator. A very robust, full-rotor automatic movement highly regarded by enthusiasts, the caliber powering Patek Philippe’s perpetual calendar watches was replaced by the ultra-thin caliber 240 Q when the 3450 was discontinued and the reference 3940 was introduced in the mid-1980s.

Nicknamed the “Padellone” by Italian collectors, the reference is adored by collectors for its oversized, 37.5 mm diameter case with clean, angular lines and the symmetrical and balanced dial. The way in which the wide bezel slopes dramatically outwards from the dial, with jutting angular lugs, gives the impression of a watch much larger than its actual case measurements. Later examples, such as the current lot, would feature more uniform and modern printing for the signature and date track.

The present lot is fresh-to-the-market and retains its and original hallmarks, including two small owl hallmarks on the case back, indicating it was originally destined for the French market. Fitted with Italian day and date calendar wheels at 12 o’clock, it was likely a special order requested for an Italian client living in France. Combining rarity, timeless aesthetics, and highest quality watchmaking, the "Padellone" is one of Patek Philippe’s finest creations, and this well preserved example will certainly impress anyone who has the chance to strap it on their wrist.