USSR FDC Baikonur Shipka-88 Intercosmos Cooperation with Bulgaria 1988

This Soviet 1988 commemorative envelope celebrates the Intercosmos program's cooperation with Bulgaria, featuring a vibrant depiction of a rocket launch from Baikonur Cosmodrome. The envelope showcases red and yellow hues, a stylized rocket design, and appears to be in well-preserved condition, reflecting a significant moment in international space collaboration.