1929 Sc 225B Former street children at work in agriculture Scott B56

1929. Former street children at work in agriculture.
Catalog numbers: Scott B56, Standard Collection 225B, Michel 362B, Yvert 420A.
Issued on: 1929.
Perforation: line 10½.
Printing: Photogravure.
Color: Multicolor.
Face value: 20+2 Russian kopek.