O5438 CI+ 20201019080000.0 1833-1842 32.5 cm x 24.8 cm Grabowski, Christophe, Rink, John. Annotated Catalogue of Chopin's First Editions (AC Online) AUTH2216 15–1b-Sm http://www.chopinonline.ac.uk/aco/catalogue/nocturnes-opus-15/151b-sm/ PL-Wnifc Muzeum Fryderyka Chopina Narodowy Instytut Fryderyka Chopina M/610