Southern Rhodesia: Short-Paid Air Letter

Southern Rhodesia NGK# 3X/02 (vertical address lines on back, two sealing flaps, watermark "KENT VALE PARCHMENT "7") sent from Salisbury in May 1950 to Austria. Censored upon arrival and taxed with 6.75 Schilling postage due.

The aerogramme was handled as if the rate to Austria was 1 s, so the air letter was short paid 6 d. Double the deficiency (1 s) was converted into 80 UPU ctms at a rateof 3 d = 20 UPU ctms. In Austria, this amount was converted at a rate of 20 UPU ctms = 1.7 Schilling, so 80 UPU ctms = 6.8 Schilling.