1962 Pof.PL1269 production flaw, Congress FIP, printing flaw - black oblique lines on pos. 2 - stěr black; nice quality mint never hinged, only on pos. 1 more/larger grain in paper
1973 Pof.PL L76xb, 50 years Czechoslovak Airlines 1,40Kčs, blk-of-10 on paper -oz-; light folded in perforation, R irregular cut, overall fine, on request certificate labour, very often missing in collections of blocks of 10!
1973 Pof.PL L77xb, 50 years Czechoslovak Airlines 1,90Kčs, blk-of-10 on paper optically cleared; very slightly toned in margin, otherwise fine piece, exp. Kulda, often missing in collections!
1954 Registered and Express letter sent inland, franked i.a. whole blk-of-10 stamp. 30h Destinnová, Pof.PL757, type II., I. plate A, CDS JIHLAVA 1/ 23.II.54; slightly toned in envelope