No block images found 		Issuer: United States

Date: 9/14/1988 (1988 blocks)
(4, 2 x 2)
1, 1: 25c d=Nathaniel Palmer
1, 2: 25c d=Charles Wilkes
2, 1: 25c d=Richard Byrd & airplane
2, 2: 25c d=Lincoln Ellsworth, Polar Star, map of Antarctica





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