1923 16¢ Air Service Emblem
Issue Date: August 17, 1923
City: Washington, DC
Printed By: Bureau of Engraving and Printing
Printing Method: Flat plate printing
Color: Dark blue
This stamp illustrates the Air Service Emblem. It was issued to cover postage for an airmail letter of one ounce or less, for a distance covering two zones within the United States.