1920, proofs of the Red Cross overprint, group of four items incl. Hradcany 5h. horizontal block of eight with trial overprints (Type C) with the right half unoverprinted, “20h.” black overprint proof pair on white glazed paper, 30h. horizontal strip of five with four trial overprints (Type C) and 5h. with misplaced trial overprint (Type A). Scarce and mostly fine.
