Calendar of Events

March 29-31, 2019, Mira Hotel Hong Kong (HK)

6th Hong Kong Coin Show (HKCS)

April 27-29, 2019, Royal Park Hotel, Tokyo (JPN)

Tokyo International Coin Convention (T.I.C.C.)

May 18, 2019, BERNEXPO, Bern (CH)

BERNA, 48. Coin Fair Berne

May 20-22, 2019, Zurich

SINCONA Auctions 54-57

August 23-25, 2019, Mira Hotel Hong Kong (HK)

7th Hong Kong Coin Show (HKCS)

October 21-23, 2019, Zurich

SINCONA Auctions Fall 2019



We hold two internationally renowned auctions twice a year in Zurich, offering our customers a large selection of coins, banknotes, medals, etc. We encourage your participation, whether as buyer or consignor.


We constantly seek coins, medals and notes for our customers. We shall gladly accept individual pieces, as well as entire collections.


We produce professional and market-aligned estimates upon request. Needless to say, such estimates always represent specific purchase offers.

Coin Lending

Are you temporarily low on cash albeit unwilling to part with your treasures? Learn more about coin lending!

Precious metals trading

Would you like to buy (as coins or bars) or sell gold, silver or other precious metals at the best price?

Safe deposit boxes

Store your valuables and important documents in a safe, discreet, and insurable manner in the safe-deposit boxes of SINCONA TRADING AG, accessible at all times at a prime location in Zurich.