1973 Sc 4237-4240. Historical and architectural monuments of the Baltic republics. Scott 4150-4153

1973. Historical and architectural monuments of the Baltic republics
Catalogs: Scott 4150-4153, Standard Collection 4237-4240, Michel 4195-4198, Yt 3998-4001.
Issued on: 1973-12-20.
Perforation: comb 12 x 12½
Printing: Offset lithography and Recess
Size: 30 x 42 mm
Colors: Multicolor
Face value: 4 Russian kopek; 10 Russian kopek
Print run: 4,000,000; 4,200,000; 3,800,000; 3,200,000