On your web site I found an item about the paper emergency-coinage of Leiden 1574; “QUERY: TERM FOR PAPER PRESSED INTO COIN FORM SOUGHT”. The Leiden paper coins are not to be considered as “papermoney”. The city only used paper from old books – not “covers and pages of church missals, hymnals” but paper from many sort of incunabulae dating long before 1574 most of them dealing with church related subjects and Churchfathers – as most of the books did in that time, ordered by the citycouncel from a local bookbinder’s stock, because all other materials (metals) were used already in an earlier stage of the siege (copper and silver from the churches etc.). No missals, no hymnals.
They are coins made from paper yes... but have nothing to do with banknotes etc. Shortly after the siege they were changed for silver. The coin-dies for the paper coins were made by a local silversmith and are still preserved in the museum “De Lakenhal” in Leiden and have an identical shape as normal dies for metal coins.
Recently drs. Arent Pol and I (drs. Bouke Jan van der Veen) gave a lecture about this subject published in the book Arent Pol, Bouke Jan van der Veen, Het noodgeld van Leiden waarheid en verdichting - 3 Oktoberlezing 2007 (Leiden 2007) [translation of the title “truth and fiction of the Leyden siegecoins 1574”]. Maybe this information can help you with your query.