Page: 
Source: 
p. 1, b. 1-14
p. 1, b. 1-14
p. 2, b. 15-32
p. 3, b. 33-50
p. 4, b. 51-69
AT - Autograph of a fragment
Main text
AT - Autograph of a fragment
AW - Presentation Autograph
CDP - Copy for Delfina Potocka
GC - Gutmann's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
Select notes: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Differences
No differences
AT - Autograph of a fragment
AW - Presentation Autograph
CDP - Copy for Delfina Potocka
GC - Gutmann's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
Importance
All
Important
Main
Prezentacja
Select 
copy link PDF AT - Autograph of a fragment


  b. 1

In AT, AW and CDP, there is no cautionary flat before the 4th crotchet (b). It may mean that Chopin added the sign in [A], at the time of preparing the Etude for print, shortly before giving [A] for copying. 

Compare the passage in the sources»

category imprint: Differences between sources

issues: Cautionary accidentals

notation: Pitch

Missing markers on sources: AT, AW, CDP, GC, FE1, FES, FED, FEJ, FE2, GE1, GE1a, GE2, GE3, EE1, EE2, EE3, GE1b