Russia 1568-1583 3nd printing raster HR, CTO

Russia 1568-1583 3nd printing full set of 9 stamps, small size, raster HR, canceled to order. Michel 1575/1590 var. Russian Scientists, 1951. A.M. Butlerov, P.K. Kozlov, S.P. Krasheninnikov, P.N. Lebedev, N.I. Lobachevski, A.N. Lodygin, D.I. Mendeleev, K.E. Tsiolkovsky, P.N. Yablochkov.