A mint and used collection of Czechoslovakia 1918-83 in nine albums, a good general range including 1919 (Dec.) "Posta Ceskoslovenska" overprints (not all guaranteed), 1920 Air perf. and imperf. mint, 1925 Olympic Congress, 1926 All-Sokol mint, and a thorough run of issues to 1983; mainly fine. (several thousands)