$1 Sheet Stamp Paying 20 x Domestic Air Mail Rate
There was a 5¢ domestic air mail rate in effect from October 1, 1946 thru December 31, 1948. Currently, the number of solo uses of the $1 sheet stamp paying 20 times the 5-cents/ounce domestic (including military POs abroad) airmail rate is: 1.
Description: Airmail parcel piece with a solo $1 Prexie paying 20 times the domestic air mail rate from a military PO in the Philippines to New York.
Owner/Source: Bob Hohertz web site.