Lot 8, Canada 1851 six pence greyish purple Consort used, imperf on laid paper, no visible laid lines

Lot 8, Canada 1851 six pence greyish purple Consort used, imperf on laid paper, no visible laid linesLot 8 Canada #2b 1851 6d greyish purple Consort Imperforate, on Laid Paper, With No Visible Laid Lines, used with a target cancel, margins are all clear, from close at bottom to large at left and top, fine-very fine. This unlisted paper variety is well known by specialists, with some arguing that it should deserve its own catalogue number. Accompanied by a 1979 Philatelic Foundation certificate erroneously identifying the stamp as a #5a. Ex. Henry S. Schneider Unitrade CV$1,800.