Page:
Source:
p. 10, b. 156-172
Main text
Prezentacja
Select
In the sources, there is a 
in the middle of the bar before the bottom note of the a
2-a3 octave. In the main text we omit this unnecessary accidental, in accordance with the way in which such a combination of a grace note and the following note at the same pitch was usually written down by Chopin.
Compare the passage in the sources»
category imprint: Editorial revisions
issues: Cautionary accidentals
notation: Pitch
Missing markers on sources:
A, FE1, FE2, FED, GE1, GE2, GE3, GE4, GE1a, EE1, EE2, EE3