
U.S. #1173
4¢ Echo I
Issue Date: December 15, 1960
City: Washington, D.C.
Quantity: 124,390,000
Printed by: Bureau of Engraving and Printing
Printing Method: Rotary Press
Perforations: 11 x 10 1/2
Color: Deep violet
U.S. #1173 honors Echo I, the worlds first passive communication satellite. The stamp shows a satellite ... more
U.S. #1173
4¢ Echo I
Issue Date: December 15, 1960
City: Washington, D.C.
Quantity: 124,390,000
Printed by: Bureau of Engraving and Printing
Printing Method: Rotary Press
Perforations: 11 x 10 1/2
Color: Deep violet
U.S. #1173 honors Echo I, the worlds first passive communication satellite. The stamp shows a satellite orbiting earth while emitting radio waves.