This book results from Robert Klugseder’s discovery of new fragments in Vienna (Fragm. 661) and Margaret Bent’s recognition that they belonged to the same original manuscript as a set of fragments in Munich (Mus. Ms. 3224, already known). Together they make a torso of 12 leaves with 20 compositions, nearly half of which are unique, an important complement to the already-known Veneto manuscripts of international repertory of the first half of the 15th century. A high-quality colour facsimile of these leaves, together with associated fragmentary survivals, is preceded by an in-depth codicological and repertorial study in German and English.