BAT88903: Missal 515 f.1r Page of choral music with an historiated initial 'O' depicting The Calling of St. Peter and St. Andrew, the border illuminated by Filippo di Matteo Torelli (1409-68) from a choir book executed before 1449 (vellum) (for details see 56718 & 88904), Strozzi, Zanobi di Benedetto (1412-68) / Bridgeman Images