The subject of the analysis is a codex Geert Groote Cannonical Hours (cod, 83/I) from the Special Collection of the University Library in Toruń, up till 1945 being a part of collection of the Staats- und Universitätsbibliothek in Königsberg. It is one of more interesting, luxurious devotional books in Toruń collection, richly decorated with initials and floral bordures with drolerie motifs on the margins. It has been introduced to the literature by Alicja Karłowska-Kamzowa, but so far it have not had a full monograph and the information on its provenance and dating have to be revised. The codex, written in low-Netherlandish language with Latin insertions and preceded with a calendar of the Utrecht Diocese, most probably made a book of p...