1950 Sc 1435 Studies in agrotechnics Scott 1469

1950. Studies in agrotechnics.
Catalog numbers: Scott 1469, Standard Collection 1435, Michel 1470.
Issued on: June, 1950.
Perforation: line12½.
Printing: Photogravure.
Colors: Multicolor.
Face value: 40 Russian kopek.