For more than five decades, Tietjen+Co Auction House has been one of the established names in the international numismatic market. Since its foundation in 1969, we have conducted more than 130 auctions featuring coins, medals, paper money, and numismatic literature.
Twice a year, we present a broad range of auction offerings – from ancient coinage and German and international coins to modern issues, medals, decorations, and selected numismatic literature. Since 2025, Tietjen+Co Auction House has continued as a brand of Harries GmbH.
Sound specialist knowledge, decades of experience, and scholarly research form the foundation of our work. One of Germany's most important numismatic reference libraries supports the careful identification, cataloguing, and market-oriented valuation of every object entrusted to us. Over the decades, we have successfully auctioned numerous important collections and brought together consignors and buyers from around the world. The results of our auctions and the trust of our long-standing clients reflect the quality of our work.
Our premises on Hofweg in Hamburg are a meeting point for collectors, consignors, and heirs. We provide personal, individual advice, whether you wish to consign a single item or an extensive collection. We also prepare professional numismatic appraisals and expert opinions.
For the purchase and sale of coins, precious metals, jewellery, and other items not intended for auction, we work closely with our partner Harries-Münzen. They buy and sell gold, silver, platinum, bullion bars, coins, and medals made of precious and base metals. Jewellery, scrap gold, dental gold, individual items, and entire collections are also purchased there. Investors looking for investment gold or silver will likewise find a comprehensive selection. Together, we are able to offer the most suitable marketing or sales channel for virtually every object.