1974 Rocket aerogram
1974 Rocket
Same design as 1957, but with an 11 centavos "1974" carmine indicium and green gray background. "R de C" watermark.
1974 Rocket - Used to Bulgaria
1974 Rocket
Same design as 1957, but with an 11 centavos "1974" carmine indicium and green gray background. "R de C" watermark.
1974 Rocket - Used to Bulgaria