Decorated initial on a leaf from an Antiphonary, in Latin [Italy, perhaps Umbria, c.1300]

single leaf, 415x325mm, vellum, with a decorated initial 'C' (for the first response 'Cantantibus organis Cecilia...' at Matins of St Cecilia's feast day (22 Nov.), 7 lines with text and music, rastrum 26mm, smaller flourished initials, vellum slightly dirty, in a double-sided glazed frame

Perhaps sold by the dealer and framer Konrad Zimmermann, Rahmenwerkstätten / Kunsthandlung / Berlin W - Schillstr.18 (sticker on frame).