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A printer's mark for Frans Birckman features a hen on a mound. The motto "In the Fat Hen" refers to the name of Birckman's shop in Cologne. Heraldic shields on either side display merchant marks, which served as logos for the printing house.
Rupertus Tuitiensis Rupert of Deutz, Monasterium Tvitiensis the Monastery of Deutz, Benedictine a monk of the Order of Saint Benedict, Commentaria interpretive writings or commentaries, Apocalypse the Book of Revelation, Iohannis of John, Frans Birckman a prominent 16th-century printer and bookseller, Colonia Cologne, 1526 the year of publication