unused Block of Four 13c Blue Green on bluish (365), block of four, brilliant color, natural s.e. at T., lightly hinged, fresh, fine, an extremely scarce block, with 1976 P.F. certificate, Scott retail $12,000.00 photo est.

Details

unused Block of Four 13c Blue Green on bluish (365), block of four, brilliant color, natural s.e. at T., lightly hinged, fresh, fine, an extremely scarce block, with 1976 P.F. certificate, Scott retail $12,000.00 photo est.