By a detailed analysis of decoration and collation of this manuscript it was found out that three principal masters participated in its decoration. The top quality of the decoration can be found in the work of the first master continuing the Byzantine, Venetian, and Saxon-Thuringian creation. The second master uses the first master´s work. The work of the third master is quite different as it is connected with original Bohemian production – with the Mater verborum manuscript. This different quality of illuminations allows to suppose that the codex originated in a scriptorium acting somewhere in Bohemia and employing a number of artists and their helpmates.