Canada, Official, 1949, 50¢ Lumbering, "O.H.M.S.". Centered with mathematical precision with huge, perfectly balanced margins and pristine, never hinged o.g., a Superb gem. Unitrade No. O9 C$330 ($336). Scott No. O9  $200. $0 (Image)

Canada, Official, 1949, 50¢ Lumbering, "O.H.M.S.". O.g., never hinged, a virtually perfectly centered block of 4, post office fresh and Extremely Fine, a gem block. Unitrade No. O9 C$1,320 as singles ($1,342). Scott No. O9  $800. $0 (Image)