The violin sonata RV 810 is among the most recent Vivaldi discoveries. Its history is strange: coming to light among the anonymous holdings of the Dresden library (SLUB), it was attributed to Vivaldi on account of its concordance with the recorder sonata RV 806, similarly anonymous, discovered not long before in Berlin and attributed to Vivaldi on the strength of several musical links to authentic works. The story of these two sources became more interesting and complex with the discovery of a plagiarized sonata published towards 1750 by the Venetian violinist Antonio Pizzolato, who made use of a large amount of material taken from Vivaldi’s sonata. The present, first edition of RV 810 relates the intricate story of these finds and restores to public view the text of a fresh and scintillating work composed by Vivaldi in the mid 1710s.