Wolfgang Amadeus MOZART (1756-1791). Messa posta in Musica dal Signore W.A. Mozart. Spartizione N° 1 (Vienne, Hoffmeister ; Leipzig, Bureau de Musique, [1802] ; cotage 87) ; fol. in., [1 f.], 47 p., contemporary brown strong paper boards with ms title label on upper board, in cloth-covered dust jacket. First edition of the Missa brevis KV 192 (186f) for 4 voices, 2 violins and organ, no. 1 by the Collezione di Musica di Chiesa. Engraved music. One of the earliest editions of Mozart's church music. G. Haberkamp, Die Erstdrucke der Werke von Wolfgang Amadeus Mozart, p. 96-97.