A FINE EXAMPLE OF THE 1851 ONE-CENT TYPE Ia IMPERFORATE.
Despite this type originating in the bottom row, and therefore with no stamps below it, examples showing wide margins at bottom are very much the exception.
With 2010 P.F. certificate. Scott Retail with non-pen cancel $13,000.00. Considering the fact that a light pen cancel leaves the design characteristics unmasked, the reduced Scott value for a pen-cancelled No. 6 seems unjustified.