Russia 2710-2714 mlh

Russia 2710-2714, lightly hinged, $2.50. Michel 2728-2729, 2731, 2808-2809. 1963. Russian Academy of Science, members: M.A. Pavlov, I.V. Kurchatov, V.I. Vernadski, A.I. Krylov, V.A. Obrutchev, geologist.