1927 Sc 16 Map of Tannu Tuva Scott 20

1927. Map of Tannu Tuva.
Catalog numbers: Scott 20, Standard Collection 16, Michel 20, Yvert 20.
Issued on: September, 1927.
Perforation: comb12½.
Printing: Lithography.
Colors: Multicolor.
Face value: 8 Russian kopek.