248 ARGENTINA - OFFICIAL STAMPS - POSTAL HISTORY Auction #2504: ARGENTINA: Special February auction - part II Cover / Cat.#: VF. Cover with cachet of the Provisional President of Argentina posted by registered mail in Buenos Aires on 11/AP/1958, franked with $2.40 (Ameghino), it includes its original letter with the hand-written signature of Pedro Eugenio Aramburu, rare! Starting Price: US$ 100 Current Price: US$ 100 Bid US$ 111 or more Closing: 2025-02-13 22:05:00