Patek Philippe 7121 (Pre-owned - Good) — USD 42,170 on eBay

The Patek Philippe Complications Reference 7121 is a ladies' wristwatch that features a moon phase display. This model is part of the Complications collection, which showcases timepieces with additional functions beyond simple time-telling, presented in a more understated and classic design compared to grand complications. The 7121 is distinguished by its compact dimensions and refined aesthetic, making it suitable for daily wear while retaining the brand's horological integrity. It represents Patek Philippe's commitment to offering sophisticated mechanical watches for women. The watch is housed in a yellow gold case, measuring 33 mm in diameter. The bezel is set with diamonds, adding a decorative element to the classic round case shape. Powering the timepiece is the manual-winding caliber 215 PS LU, which is visible through a sapphire crystal case back. This movement provides a power reserve of approximately 44 hours. The front crystal is also made of sapphire, ensuring durability and clarity for the dial. Reference 7121 appeals to collectors seeking a Patek Philippe ladies' complication watch with a traditional design and a manual-winding movement. Its moon phase complication is a classic feature, and the diamond-set bezel offers a touch of luxury. The watch fits into the brand's broader offerings by providing a smaller, elegant option within the Complications range, distinct from larger or more technically complex models.