unused Block of Four 1c Buff (112), left margin block of four, full o.g. (left pair has a narrow natural gum skip), remarkably fresh bright color and a sharp clear impression on fresh crisp paper, fine-very fine, a scarce multiple, with 1983 P.F. certificate, Scott retail $4,000.00, Jon Rose records only 12 unused blocks of any size for this stamp photo

Details
unused Block of Four 1c Buff (112), left margin block of four, full o.g. (left pair has a narrow natural gum skip), remarkably fresh bright color and a sharp clear impression on fresh crisp paper, fine-very fine, a scarce multiple, with 1983 P.F. certificate, Scott retail $4,000.00, Jon Rose records only 12 unused blocks of any size for this stamp photo