20 ARGENTINA - RIVADAVIAS Auction #1921: ARGENTINA: small but very attractive auction Single / Used Cat.#: GJ.23 VF. GJ.23, 10c. green, semi-clear impression, on fragment with Buenos Aires datestamp, superb Starting Price: US$ 25 Current Price: US$ 25 Bid US$ 28 or more Closing: 2019-06-06 22:05:00