Münzenhandlung Erwin Dietrich AG est une des plus anciennes maisons numismatiques de Suisse s'occupe principalement de l'achat et de la vente de vieil or, de vieil argent, de pièces de monnaie et de numismatique (collection de pièces de monnaie, billets de banque, médailles et actions anciennes).

CHRISTIE'S ist eine 1766 gegründete Auktionsfirma.

Antiquorum, The World's Premier Auctioneers of Modern and Vintage Timepieces, is proud of our fine reputation and the industry knowledge of our internationally recognized staff of watch experts. Established in Geneva in 1974, Antiquorum has carved its own unparalleled niche in the auction world by cultivating a thriving collector's market for timepieces worldwide and consistently obtains the highest prices for timepieces, auctions timepieces with exceptional provenance and rarity and has set many world records. A perpetually innovative source for collectors, in the early 1980s Antiquorum pioneered the sale of wristwatches at auction, creating a new and exciting market. Next came the thematic auction devoted to a single subject, the first of which was the Art of Patek Philippe held in 1989, the 150th anniversary year of that prestigious watchmaking firm. Antiquorum regularly offers thematic sales at which enthusiasts may enrich their collections and, through Antiquorum's authoritative and informative catalogues, acquire invaluable knowledge on each specific subject. In 2005, the historic thematic auction “The Quarter Millennium of Vacheron Constantin” achieved a total of US$ 15,110,000 (SFr. 18,123,069). A record for Vacheron Constantin, this was also the second best result, after Patek Philippe, for a single-brand sale. Among the world records: the “Tour de l'Ile”, at US$ 1,564,000 (SFr. 1,876,250), set a world record for a contemporary wristwatch and the “King Fouad I”, at US$ 2,755,000 (SFr. 3,306,250), achieved the highest price ever paid for a Vacheron Constantin watch. In 2006, the Mondani Collection of 309 Rolex Wristwatches realized the astounding total of SFr. 11,037,278. Several world records were set, most significantly by Ref. 4113, a fly-back chronograph that sold for SFr. 738,500, the highest price ever attained by a Rolex watch. The total for the Omegamania auction in April 2007 was SFr. 6,536,911 (US$ 5,540,000), three times the overall estimate. Numerous world records were achieved, including the highest price for an Omega watch at auction, for the 1958 “Platinum Constellation Grand Luxe”, which sold for SFr. 413,700 (US$ 351,000). In 2008, Antiquorum obtained the impressive total of 8,515,260 USD for its Rolex thematic sale, “Revolution: The Evolution of Rolex Sport Watch.” A total of nine world records were reached including a remarkable price of $248,800 that was achieved for the Comex Sea-Dweller. In 2002, Antiquorum set the all-time world record for a wristwatch at auction, selling a unique 1939 platinum Patek Philippe World Time Ref. 1415 for US$ 4,026,524 (SFr. 6,603,500) - more than double the previous world record.

Chez Lugdunum, nous avons fait de la numismatique notre coeur de métier, de votre confiance un mot d'ordre et de votre satisfaction notre priorité absolue. Parce que nous travaillons avec passion, enthousiasme et professionnalisme, nous investissons sans compter pour que nos ventes aux enchères atteignent les meilleurs prix, pour que nos catalogues de vente repondent aux plus hauts standards de qualité et pour que votre satisfaction soit la plus grande.