Lot 247Special Delivery, 1908, 10¢ green, top margin plate no. "4920" block of 6 with imprint, o.g., never hinged, choice overall centering, rich color and exceptional freshness, Extremely Fine and choice; with 2016 P.S.E. certificate.
Scott No. E7 $1,400.
A GEM TOP MARGIN PLATE BLOCK OF THE 10¢ "HELMUT OF MERCURY" SPECIAL DELIVERY ISSUE.