Patek Philippe 3450 (Pre-owned - Good) — USD 14,500 on eBay

The Patek Philippe Reference 3450 is a perpetual calendar wristwatch with a moon phase display, notable for its unique leap year indicator. This reference succeeded the 3448 and introduced a new mechanism for displaying the leap year cycle, distinguishing it from earlier perpetual calendar models. It represents a significant evolution in Patek Philippe's perpetual calendar lineage, bridging the gap between vintage and more modern interpretations of the complication. This reference features a 38mm case, typically crafted from 18k white gold, housing an automatic movement. The watch is fitted with a sapphire crystal, protecting a silver dial. The movement, caliber GP3100, provides a power reserve of 42 hours and incorporates the perpetual calendar and moon phase functions. The case design is characterized by its balanced proportions and refined finish. For collectors, the Reference 3450 is particularly appealing due to its limited production and the innovative leap year display. It is considered a transitional reference, offering a blend of traditional Patek Philippe aesthetics with a technical advancement. The rarity of this reference, especially in certain case materials, contributes to its desirability among enthusiasts of complicated vintage timepieces.