Item no. S379a (stamp)
Type: stamp
Country: Bulgaria
Date of issue: 24 January 1973
Catalog number: Scott no. 2074 (of 2074 - 2077), Michel no. 2212 (of 2212 – 2215)
Stamp (version perforated) of a 4-stamp set “Deep-sea research in the Black Sea”. It shows imaginary graphic image of two divers holding cameras.