1971 SC 3922 Birth Centenary of E.T.Birznieks-Upits Scott 3842

1971. Birth Centenary of E.T.Birznieks-Upits.
Catalogs: Scott 3842, Standard Collection 3922, Mi 3869, Yt 3712.
Condition: MNHOG.
Issued on: April 1, 1971.
Perforation: comb 12 x 12½.
Printing: Photogravure.
Size: 30 x 42 mm.
Colors: Multicolor.
Face value: 4 Russian kopek.
Quantity: 3,000,000.