This breviary was meant for use in the diocese of Basel. There are
still partially visible traces of coats of arms that were painted
on ff. 33r, 41r, 129r and 279r and were later erased; these allow
the codex to be attributed to Arnold of Rotberg, Bishop of Basel
from 1451 to 1458. His successor, Jean de Venningen (1458-1478)
noted on f. 5r the repurchase of the manuscript from Porrentruy
Castle on June 29th 1461.