4¢ Sheet Stamp Paying Air Mail Rate on Penalty Permit Return Receipt
Currently, the number of solo uses of the 4¢ sheet stamp paying the air mail rate on a penalty permit return receipt card is: 1.
Description: The 4¢ paying the air mail rate on a government penalty permit return receipt card dated August 27, 1956, mailed to Guam.
Owner/Source: Lot number 1379 in Schuyler Rumsey Philatelic Auctions Catalog for Sale No. 92 with items from Robert Schlesinger's Prexie Postal History Exhibit. The lot realized $250.