This 1943 Upper Right Corner Block of 4, Plate 4, 7c deep blue Scott #C8 "British Commonwealth Air Training Plan"  War Issue Air Mail stamps from Don's Classic Stamps is in Mint Never Hinged (MNH) condition, with a medium depth diagonal paper "fold" through the top-right large Tab and the top-left stamp and a V shaped pressure mark in the bottom-right stamp  (See Images). The Unitrade Specialized Catalogue of Canadian Stamps, which follows the Scott numbering system format in its listings, shows a Catalogue value of $12.00 (in Canadian currency) for this block.  (Item #11,713)