In A (→FE) Chopin omitted the naturals raising B1 to B1, C to C and c to c. The second of them was added in FES. In GE a was added at the end of bar 18, yet both signs in bar 19 appeared only in GE3 (→GE4→GE5). EE has the correct text.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Annotations in teaching copies, EE revisions, Accidentals in different octaves, GE revisions, Omission of current key accidentals, Annotations in FES
notation: Pitch