1538 PUERTO RICO - LOTS AND COLLECTIONS Auction #2031: WORLDWIDE + ARGENTINA: General July auction Lot / Mint O.Gum (LH) Cat.#: F.VF 2 Stamps of 1899 with MUESTRA overprint, very nice! Starting Price: US$ 10 Current Price: US$ 12 Bid US$ 14 or more Closing: 2020-07-30 22:10:00