unused Block of Four Canada, 1927-67, accumulation of a few thousand plate no. blocks, many better incl. nos. 209, 294 (five), 321 (twelve), 411 (five), 465B (eight), E01 (four), J16B (nine pl. no. blocks of ten), O23 (four), O24 (five), O32 (ten), O38 (sixteen), many never hinged, fine-very fine lot, Scott retail $10,600.00+ (plate no. blocks unpriced, cataloged as singles)