In A (→GE→EE) there is no accidental to the top note of the penultimate fourth, which gives d
2. The flat to d2 in the next quaver proves Chopin's patent mistake, yet it was only FE that added the necessary 
. In IE the erroneous GE version was revised by changing this note to c2, which is quite satisfying in terms of sound, yet certainly inauthentic.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Errors of A, FE revisions,
notation: Pitch