Felzmann Auction House is holding a Briefmarken Sprechstunde (stamp consultation) on May 21, 2026.
Leu Numismatik AG is holding Auctions 21 & 22 on May 30, 2026, featuring various collections including the Appassionato Collection, the Aotearoa Grazier Collection, and others.
Numisbids Auctions is holding several auctions, including Münzhandlung Sonntag's Ancient, German, and World Coins - Medals on May 18th, Heritage Auctions Europe's Ancient, Dutch, and World Coins, Gold Coins - Banknotes - Medals - Lots from May 18th-23rd, Varesi's Ancient, Italian, and World Coins, Medals, Lots on May 19th-20th, SINCONA's Rod K. Moore Collection of Swiss Shooting Medals and Memorabilia - Part 1 on May 19th, Soler y Llach's Public and Online: Ancient, Spanish and World Coins, Gold Coins, Banknotes, Numismatic Literature from May 19th-21st, CNG's David C. Bianchi II Collection - British and Medieval French & European Coins and Holmasto's Ancient, Finnish, Swedish, Russian, and World Coins - Gold Coins - Banknotes - Medals on May 20th, Wójcicki's Ancient, Polish, and world Coins, Banknotes and Numisma Aste's Coins and Medals on May 23rd-24th, Aurea's Coins, Medals, Paper Money and Numimarket.pl's Ancient, Polish, and World Coins, Banknotes, Medals, Decorations on May 23rd, NAC's Palatine: Part 1 - Roman Republican and Imperatorial Coins and An Important Selection of Greek, Roman, and Byzantine Coins and Noonans Mayfair's Coins and Historical Medals on May 26th, NAC's Dr. Irving Schneider Collection: Part 3, The Traveller Collection - III: Part 2 - British Coins, and The Traveller Collection - IV: Part 1 - Italian Coins and Höhn's German and World Coins, Medals, Banknotes, Lots and Dorotheum's Coins and Medals and Noonans Mayfair's World Banknotes on May 27th, Aureo & Calicó's Ancient, Spanish, World Coins, Medals and Banknotes on May 27th, Bolaffi's Ancient, Italian, World Coins - Medals - Banknotes - Lots on May 28th-29th, Baldwin's The Abby Welsh Collection of Crowns & Halfcrowns and Gold & British Coins and Bertolami Fine Art's Modern Italian and World Coins and Medals on May 29th, Leu Numismatik's A Selection of 560 Ancient Coins - Appassionato, Clodius-Tobler, Rohdewald, and Rossignol Collections and A Selection of 200 World Coins and Medals - Grazier, Castra Regina, and Wörle Collections and Taisei's Japanese and World Coins, Banknotes on May 30th, Nomos' Greek and Roman Coins - The Bollen Collection of Byzantine Coins, Höhn's German and World Coins, Medals, EWAAN Galleries' Diamond Showcase: South Africa Coins, Heritage's Modern World Coins, Oslo Møntgalleri's Ancients, World Coins, Banknotes, Medals, Tokens, Numismatic Literature, and MARS VLTOR GmbH's Ancient Greek and Roman Coins on May 31st, Aurea's Banknotes, Numismatic Literature on June 1st-2nd, Teutoburger's Coins, Medals, and Banknotes on June 1st, Rapp's Coins, Medals, and Banknotes on June 2nd-3rd, Möller's German and World Coins, Medals on June 2nd, Sovereign Rarities' British & World Coins, Medals on June 3rd.
Sincona is holding auctions 103-105 from May 18–20, 2026 in Zürich. Auction 103 includes Swiss coins and medals on May 19, 2026 at 9:00 and 13:00 MESZ, and the Rod K. Moore Collection - Part 1 on May 19, 2026 at 15:00 MESZ, while auction 105 features the Konrad Bürki Collection - Part 5 on May 20, 2026 at 09:30 and 13:00 MESZ.