| Issuer: Bulgaria
Issue: Undersea research in the Black Sea Date: 1/24/1973 (1973 sheets) Block 1 (1, 1 x 1) 1, 1: 20s d=Divers Block 2 (1, 1 x 1) 1, 1: 20s d=Underwater House â€Shelf 1†Block 3 (1, 1 x 1) 1, 1: 20s d=Camera Lift NJW 100 Block 4 (1, 1 x 1) 1, 1: 20s d=Lifting Balloon |
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Next: Bulgaria Flight Tourism, empty sheet (#5926) External links: Colnect 410727.._the_Black_Sea Record of changes |
