unused Block Larger Than four 1926, 5c Dark Blue, 'Zone Canal' overprint (86e), single error in B. part arrow block of eight, error the B.L. stamp, s.e. at L., error stamp never hinged, other stamps show dramatic shifts in overprint, from second printing, a few perfs sensibly reinforced, fine, ex Plass, Scott retail $325.00 for the single errorphoto est.

Details

unused Block Larger Than four 1926, 5c Dark Blue, 'Zone Canal' overprint (86e), single error in B. part arrow block of eight, error the B.L. stamp, s.e. at L., error stamp never hinged, other stamps show dramatic shifts in overprint, from second printing, a few perfs sensibly reinforced, fine, ex Plass, Scott retail $325.00 for the single errorphoto est.