Czechoslovakia

 "e" without accent. Size: 32mm x 12mm, perforated, gummed.
Günter Mair catalogue: CSR-A-5a (1928)

Size: 32mm x 12mm, perforated, gummed.
Günter Mair catalogue: CSR-A-9 (1934)

Wording changed to "Lietadlom"
   Size: 32mm x 12mm, perforated, gummed.
Günter Mair catalogue: CSR-A-18 (1945)

Size: 32mm x 12mm, perforated, gummed.
Günter Mair catalogue: CSR-A-? (circa 1946)