Czechoslovakia: An extensive mint and used collection in six albums, from 1918 to 1990, incl. 1919-20 selection with imperf. 30h. used (2), range of “1919” overprints, 1928 Air set imperf. mint (2), perf. 14k. and 24k. mint, 28k. used, 1925 Olympic set mint, miniature sheets, Bohemia, East Silesia, Republic of Slovakia 1939 to 10k. mint, etc. (100s)