1953, 1c-12c Birds, imperforate vertically (vars. 341-346), four different mint triangle shaped multiples: 1c (15 stamps), 4c (9 stamps), 5c (15 stamps); 10c horizontal strip of four; also incl. mint error singles of 4c, 10c and 12c with double impression of the birds (double impression of one color), never hinged, very fine