RUSSIA yr 1931, SC C15-19,MI 397C-401C,MH, imperorated. Zeppelins, Airhips  &  RUSSIA YR 1932,SC C23A, MI 400BYb,MH, Airships over Arctic, 50 KOP, GREY-BLUE. Iclud Mi: 397-401 used set.  all cat €1380