CZECHOSLOVAKIA , 307-309, MINT NH , Rare Gutter Pairs & Blocks of Stamps CZECHOSLOVAKIA , 307-309, MINT NH , Rare Gutter Pairs &am... CZECHOSLOVAKIA, 307-309, MINT NH , Rare Gutter Pairs & Blocks of Stamps CZECHOSLOVAKIA, 307-309, MINT NH , Rare Gutter Pairs & Blocks of Stamps PRICETAG: $960.00