Czechoslovakia 1919 Hradcany 25h imperf proof block of 4 in purple doubly printed with 75h in green on ungummed buff paper, as SG 28 & 32
Czechoslovakia 1919 Hradcany 25h imperf proof block of 4 in purple doubly printed with 75h in green on ungummed buff paper, as SG 28 & 32