568 ARGENTINA - GENERAL ISSUES Auction #2311: ARGENTINA: very attractive auction Lot / Cat.#: GJ.839 VF. GJ.839, 15c. Pan-American Union, proofs in blue and steel blue, on opaque paper, in pairs, VF Starting Price: US$ 20 Current Price: US$ 20 Bid US$ 22 or more Closing: 2023-03-30 22:10:00