Lot
1822 
Parcel Post, 1913, 20¢ Airplane Carrying Mail, bottom margin plate no. "6191" block of 6, o.g., never hinged, exceptional overall centering, deep rich color and wide sheet selvage, Extremely Fine, without question, one of the finest plate blocks of the 20¢ Parcel Post issue in existence. Scott No. Q8 $6,000.
AN OUTSTANDING NEVER HINGED PLATE BLOCK OF THE 20¢ PARCEL POST ISSUE.
Realized: $2,800