This Block of 6 1928 5c brown olive Scott #C1 Air Mail Issue stamp, with a Plate 2 Inscription in the top margin, from Don's Classic Stamps is in Very Fine (VF) Mint Never Hinged (MNH) condition. The Unitrade Specialized Catalogue of Canadian Stamps, which follows the Scott numbering system format in its listings, shows a Catalogue value of over $250.00 (in Canadian currency) for this block. (Item #6706)