811 BOLIVIA - AIRMAIL Auction #1822: WORLDWIDE + ARGENTINA: Early Winter General Auction! Single / Mint O.Gum (LH) Cat.#: Sc.C17 VF. Sc.C17, with SILVER overprint (proof), tiny hinge mark, excellent and rare! Starting Price: US$ 100 Current Price: US$ 110 Bid US$ 122 or more Closing: 2018-06-28 22:25:00