MOZART, WOLFGANG AMADEUS. Grande Sonate a quatre mains sur un Clavecin ou Pianoforte. 39 pages, with plate number 108 on each leaf. entirely engraved throughout, with handwritten opus number on title. Oblong 4to, 225x301 mm, modern 1/4 morocco with morocco lettering piece; occasional light soiling, margins trimmed slightly entering music on several leaves, small horizontal strip torn from lower outer corner of title affecting music on verso, early signature on title. Vienna: Artaria, [1796]