Lot 71502 – 1965 25th ITU 9d album page illustrating four errors and varieties

1965, Album page study of the 1965 25th International Telecommunications Union 9d, illustrating errors and varieties, four examples mint n.h., including a corner cylinder block of six phosphor issue, with a shift of red, and two horizontal pairs and a single displaying various other errors of printing, very fine and nicely presented.