1963 Sc 2868-2873. Ural semi-precious stones. Scott 2824-2829

1963. Ural semi-precious stones.
Catalog numbers: Scott 2824-2829, Standard Collection 2868-2873, Michel 2846-2851, Yvert 2752-2757.
Perforation: comb 12½.
Color: Multicolor.
Printing: Offset lithography.
Print run: 5,000,000; 4,000,000; 4,000,000; 3,000,000; 3,000,000; 3,000,000; 3,000,000.