Writes BibliOdyssey:

Regarded as one of the finest of all illuminated manuscripts in existence, the Ottheinrich Bible was thought to have been commissioned in about 1425 by the Royal Court of Bavaria. The unusually large manuscript was not completed until the following century when the German painter and engraver, Mathis Gerung, was offered 60 Rhenish guilders and winter clothes to decorate the text (the employment contract survives to this day).