Sell to the Leading Luxury Watch Buyer in San Diego
Experience a smarter way to sell your watch. Our expert buyers personally evaluate every piece submitted to ensure you receive exceptional value and service.
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Mills MenserOwner and Founder

San Diego’s Premier Destination for Selling Luxury Watches
Diamond Banc has become a trusted resource for San Diego clients looking to sell exceptional luxury watches with confidence. Our specialists purchase timepieces from the world’s most sought-after manufacturers, with particular expertise in Rolex, Patek Philippe, Audemars Piguet, Richard Mille, and other elite brands. Every offer reflects today’s global resale market, drawing on real-time dealer activity, collector demand, auction results, and wholesale pricing rather than outdated valuation guides.
Whether you’re selling a modern sports model, a discontinued collector’s piece, or a vintage heirloom, our team has the experience to accurately assess its value. We regularly purchase watches from Omega, Cartier, Tudor, Breitling, Hublot, IWC, Jaeger-LeCoultre, Panerai, Grand Seiko, A. Lange & Söhne, Vacheron Constantin, F.P. Journe, Ulysse Nardin, Franck Muller, and many other respected manufacturers. Original boxes, warranty cards, and service records can increase value, but they’re never required to receive a competitive offer.
Our San Diego office offers a discreet, appointment-based environment where clients can sell in complete privacy. You can begin with a complimentary online quote or meet with one of our watch specialists for an in-person evaluation. Once an offer is accepted, payment is typically issued by wire transfer or check within 24 hours, providing a secure, straightforward alternative to consignments or online marketplaces.
Diamond Banc of San Diego
4275 Executive Sq
Suite 202
La Jolla, CA 92037

Top Watch Brands Diamond Banc of San Diego Buys
Why San Diego Watch Owners Choose Diamond Banc
San Diego’s thriving luxury market, international business community, and proximity to Southern California’s affluent coastal communities create strong demand for premium timepieces. Diamond Banc works with clients throughout San Diego County, including La Jolla, Del Mar, Rancho Santa Fe, Coronado, Carlsbad, Encinitas, and downtown San Diego, providing a discreet, professional alternative to selling through dealers, pawn shops, or online marketplaces.
Unlike traditional buyers, Diamond Banc leverages a nationwide network of luxury watch specialists and wholesale partners to ensure every offer reflects current market demand. Our transparent evaluation process, private appointments, and fast funding make it easy to sell your watch with confidence. Schedule a private consultation at our San Diego office or request a complimentary online quote to discover your watch’s current market value.
Thuyvi Tran
With nearly 20 years in the luxury jewelry, watch, and diamond industry, Thuyvi Tran, G.G. has built a career helping clients navigate meaningful financial and personal decisions. A Graduate Gemologist from the Gemological Institute of America and a UC Berkeley graduate, she combines technical expertise with a personalized, client-first approach trusted by collectors, executives, estate attorneys, and families.
Throughout her career, Thuyvi has launched and led luxury buying markets across California, mentored high-performing teams, and developed training and operational strategies that improve both the client experience and business performance. Today, as Regional & Market Director, she supports the company’s California offices while continuing to work directly with clients in her hometown of San Diego.
Thuyvi specializes in evaluating luxury jewelry, diamonds, fine watches, and estate collections, including pieces from Cartier, Van Cleef & Arpels, Tiffany & Co., Rolex, Patek Philippe, Audemars Piguet, Richard Mille, and many others. Whether helping a client sell an heirloom, restructure a collection, or unlock liquidity from luxury assets, she provides honest guidance, meticulous evaluations, and solutions tailored to each client’s needs.
For Thuyvi, every piece tells a story connected to a family, milestone, new beginning, or important life transition. Her role extends beyond determining value—it is about helping clients understand their options, make informed decisions, and feel confident throughout the process.