AUTHENTICITY GUARANTEED - at tns diamonds
Text Us - (215) 922-1501
Family owned - We care for our customers
Pre-owned and vintage luxury watches in Philadelphia. TNS Diamonds has traded on Jewelers' Row since 1991, carrying Rolex Datejust, Submariner and GMT-Master II, plus Patek Philippe, Audemars Piguet, Omega and Cartier.
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Movement, case, dial and serial numbers are all verified before a watch goes on the site. Our head watchmaker, Paul Bogard, spent a decade training in the Swiss watchmaking tradition across London and France, and every watch that comes through TNS crosses his bench.
Valuation works the same way. We assess each watch by hand, looking at reference, movement condition, dial, case and whether box and papers are present, then check that against live secondary market data rather than a pricing tool.
No, we're an independent dealer. Authorized dealers rarely have popular references in stock and typically require a waitlist. We carry pre-owned and vintage pieces available now, priced against what the market is actually doing.
Every watch is examined by our in house experts before listing, covering movement, case, dial and serial numbers. Nothing is listed that hasn't been verified.
Always. Every listing photo is the actual watch, no stock images and no stand-ins, down to dial patina, bracelet stretch and bezel condition.
It varies by piece and it's stated on the listing. Box and papers affect value on resale, so we don't leave it ambiguous.
Yes. We work with collectors on trade-ins regularly, and the value goes toward your next piece. See selling your watch, or read about where to sell a watch in Philadelphia.
Often, yes. A non-running watch from the right brand can still be a serious piece. Send photos and details and we'll give you a straight answer.
Yes, onsite. Our watch repair service covers battery replacement and band adjustment through to full movement overhauls, ultrasonic cleaning, case polishing, water resistance testing and vintage restoration.
Sourcing rare and discontinued references is one of our strengths. Tell us what you're after and we'll tell you what's realistic.