At the bottom of title page a round, green stamp: "TOWARZYSTWO IM. F. CHOPINA | BIBLIOTEKA | WARSZAWA" and a handwritten shelfmark in blue ink: "3320/n". The same stamp on last page., TP: handwritten in blue: Op. 11 [space] 1.80, The exemplar contains performing annotations in pencil., At the bottom of page [2, 16] there is a round, black stamp: "NARODOWY INSTYTUT FRYDERYKA CHOPINA | BIBLIOTEKA" and on last page
