The picture below is the 1962 Scott #429 / KSC #393 imperforated 10 jeon “Launch of Soviet Manned Rockets Vostok 3&4”. The KSC does mention an imperforated version. However, the Scott catalog does not mention an imperforated version of this stamp. I wonder how many of our readers have seen or possess this stamp?
Examples of domestic postal use of the stamp would be especially interesting.