GE4
Main text
CLI - Copy by Linowski
Ap - Presentation autograph
FE - French edition
FEcor - Chopin's FE proof
FE1 - First French edition
FE2 - Corrected impression of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected impression of GE1
GE2 - Second German edition
GE3 - Third German edition
GE4 - Fourth German edition
GE5 - Fifth German edition
EE - English edition
EE2 - Second impression of [EE1]
EE3 - Corrected impression of EE2
EE4 - Revised impression of EE3
compare
  b. 27

In CLI and FEcor there are no accidentals before the fourth in the lower voice, which is certainly a mistake.
CLI and FE (→GE1GE2GE4,→EE) have an unnecessary  before b2 in this place.

Compare the passage in the sources »

category imprint: Differences between sources

issues: Errors in FE, GE revisions, Cautionary accidentals, Authentic corrections of FE, Errors of CLI

notation: Pitch

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Original in: Zbiory prywatne (kolekcja J. Ekiera), Warszawa