Hradcany Chapter
The rare gutter pairs overprinted with the postage due overprints (Porto) and some of then in addition canceled by Nachod postmark of February 1919
The Nachod Discovery
done by Mr. Mark Wilson of USA, who detected extremely rare Czechoslovak gutter pairs, which have been in opposition to until now known peices provided by postage due PORTO overprints .
Click here for detailed philatelic analyze of the discovery
Here you can find the original text announcing the discovery published in the American journal "The Czechoslovak Specialist"
Books on Czechoslovak Typography Issues in English
Czechoslovak Typography Issues attract attention of many domestic and foreign collectors. Until now all books dealing with the theme have been written in Czech language only (see website of Society of Cz. Typography Issues Collectors ).
Mr. M. Wilson, an American collector of the issues, started translating of the Czech studies into English in 2002, so they are now open for English speaking collectors.
This project helps to equalize the Czechoslovak typography issues with stamps of another countries, on which the philatelic literature existed in an internationally often used language.
More information about the project you can find on Mr. Wilson´s website .
List of translated books you can check here .