As San Diego's authorized dealer for Wilbur Watch Co, Watch AD & Co operates from Suite 416 of downtown's Jewelers Exchange as a buy-sell-trade specialist in pre-owned Rolex, Audemars Piguet, and Patek Philippe timepieces. Every incoming watch passes through in-house authentication before entering resale inventory, a verification step that pairs with the scheduled-value coverage available through commercial insurers like Cavignac for high-net-worth collections. The firm also stocks GIA-certified loose diamonds and manufactures custom gold and diamond jewelry on the same floor of the Jewelers Exchange that houses fellow luxury retailers like Nikki & Co. Fine Jewelers & Rolex Watches in the Gaslamp corridor. Trade-in evaluations cover mechanical movement condition, dial originality, case serial verification, and bracelet-link count, with caliber-specific assessments for Rolex 3135 and 3235 movements and Audemars Piguet Calibre 3120 and 4401 configurations.