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Source:
p. 27, b. 600-620
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The missing accidental before the 4th semiquaver in FE (→GE1→GE2) must be an oversight – in such figures, enveloping the initial note like a grupetto (very frequent in Chopin's output), two bottommost notes constitute an interval of a minor or major second, but not augmented. We add a 
, which is most likely in this place (cf. e.g. bar 220). The accidental was added already in EE and GE3.
Compare the passage in the sources»
category imprint: Differences between sources; Editorial revisions
issues: EE revisions, Errors in FE, GE revisions
notation: Pitch
Missing markers on sources:
GE1, GE2, FE1, FED, FEH, FEJ, FES, GE3, EE1, EE2, EE3, Atut, GE2a, FEFo