In A the last note in the 1st half of bar 32 is f
1, after which three naturals follow: before f2 in the next chord and before f1 at the end of this and next bars. In a proofreading of FE (→GE,EE) Chopin changed f1 to g
1 and deleted the already unnecessary 
before f2. In FE (→EE2→EE3) the accidental before the last note in bar 32 was also removed, however, the remaining traces suggest that it was a and not a . The assumption is confirmed by f1 appearing in this place in GE (and EE4). In the main text we give the undoubtedly final notation of FE.
category imprint: Differences between sources; Editorial revisions
issues: EE revisions, Errors in FE, GE revisions, Enharmonic corrections, Authentic corrections of FE
notation: Pitch