Upper half of a leaf in Carolingian minuscule, containing a fragment of De institutione musicaby Boethius (Liber I, Proemium, chap. 2). It is part of the same manuscript as the fragments R 1.5.7, R.1.5.8, R 1.1.9 and R.1.1.10 from the state archives of Solothurn. It was probably used as binding for a document from the archives of the collegiate church of St. Leodegar in Schönenwerd.
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