Czechoslovakia. Collection mostly ★ 1918–45 in two albums. Nice and clean, well.filled with e.g. many Posta Ceskoslovenska overprints. air mail imperf (used), olympic congres overprint set, almost cpl later on etc. also SO overprints and Bohemia and Moravia apparently cpl (excl the Heydrich s/s) Favourable reserve. Fine quality.