932 CHAD - AIRMAIL Auction #1920: WORLDWIDE + ARGENTINA: General May auction Pair / Mint NH (Virgin Gum) Cat.#: Yv.88 var. VF. Yvert 88, 1971 Bird, IMPERFORATE PAIR, MNH, very fine quality! Starting Price: US$ 10 Current Price: US$ 11 Bid US$ 13 or more Closing: 2019-05-30 22:10:00