1948 5¢ DC-4 Skymaster
Issue Date: January 15, 1948
City: Washington, DC
Printed By: Bureau of Engraving and Printing
Printing Method: Rotary press printing
This stamp is the same as the 1947 DC-4 Skymaster (#C33); however, it is a coil stamp and is perforated on two sides only. It was sold in coils of 500 and was the first-ever US airmail coil stamp.