T. G. Masaryk 1920
While these stamps continued the current definitive series by adding to and replacing the higher denominations of the Hradčany issue, they also commemorated the 70th birthday of T. G. Masaryk Czechoslovakia's first president. The design was taken from Professor Max Švabinský's official portrait of the president.
The stamps were issued line perforated 13¾. Collectors should be wary of purchasing imperforate copies of these stamps as the broad margin on the T. G. Masaryk 1920 issue facilitates their forgery from perforated stamps.