unused Balance, 1908-56, comprising singles of nos. 331, 463, 537c (with 1975 P.F. certificate), 621 and 1053, no. 373 R. imprint and plate no. 5393 block of six, last lightly hinged, all others never hinged, small tear on no. 463, otherwise a very fine-extremely fine lot, Scott retail $415.75est.