1954 TRAINING STAMPS / Pof.4-5, Postage 1Kčs and 2Kčs in/at corner blocks of four, both line perforation 9; mint never hinged, 2Kčs lower short teeth, sought
1954 TRAINING STAMPS / Pof.D2-D3, Postage due stmp 20h and 1Kčs in/at marginal and corner block of four, both line perforation 10¾; mint never hinged, sought and rare!