| Postal office: | PRAHA 1 |
|---|---|
| Cancellation color: | BLACK |
| Text on the stamp (first upper line): | PRAHA ** b |
| Text on the stamp (second upper line): | Č.S.P. |
| Text on the stamp (first lower line): | |
| Text on the stamp (second lower line): | VELETRH |
| Text translation: | FAIR |
| Comment: | |
| Offical period of usage: | 1921-02-28/1921-03-08,1922-03-12/1922-03-19,1924-03-16/1924-03-23,1924-09-21/1924-09-28,1925-03-22/1925-03-29,1925-09-06/1925-09-13,1926-03-21/1926-03-28,1927-03-20/1927-03-27,1928-03-18/1928-03-25,1928-09-25/1928-10-02,1929-09-01/1929-09-08,1930-03-16/1930-03-23 |