2806 SWITZERLAND - POSTAL HISTORY Auction #2141: WORLDWIDE + ARGENTINA: General November auction Cover / Cat.#: VF. Special postcards of the 1st Atomic Conference of Geneve, postmark of 20/AU/1955, VF quality! Starting Price: US$ 20 Current Price: US$ 20 Bid US$ 20 or more Closing: 2021-11-04 22:25:00