Page:
Source:
p. 2, b. 26-53
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In FC (→GE) there is no 
raising a
1 to a1 on the last quaver in the bar. According to us, the mistake could have already been committed by Chopin in [A]. It is indicated by overlooked naturals also in bar 43 – two oversights of the very naturals to a notes seem highly unlikely for a copyist; however, they are not unusual in Chopin's autographs, who would often mark alterations only the first time a given note appears in a bar.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: Errors of FC, Errors repeated in GE
notation: Pitch
Missing markers on sources:
FC, FE1, FED, FES, GE1, GE2, EE1