427 ARGENTINA - POSTAL HISTORY Auction #240: ARGENTINA + WORLDWIDE: General auction of October! Cover / Cat.#: VF. HELICOPTER FLIGHTS: 6 covers flown in 1987 and 1988, VF quality! Starting Price: US$ 25 Current Price: US$ 25 Bid US$ 25 or more Closing: 2017-11-02 22:30:00