Issues : Last key signature sign

b. 74

composition: Op. 10 No 8, Etude in F major

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At the beginning of the bar A have  before e1. The unjustified in this context sign was removed in the last proofreading of FE (→EE), not included in GE.
Also the  before the 3rd semiquaver in bar 75 is not justified with the previous flow of the music, yet we leave it due to e in the L.H. appearing in the middle of the bar. 

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE , Last key signature sign

b. 77

composition: Op. 10 No 8, Etude in F major

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In A there are no accidentals before the upper minim in the L.H. at the beginning of the bar and before the penultimate semiquaver in the R.H. First of these undeniable oversights was corrected already in FE (→GE,EE), the second – only in GE.

In A the flat before the 5th semiquaver (e4) is arranged clearly too low, at the level of b3.

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Omission of current key accidentals , Authentic corrections of FE , Accidental below/above the note , Last key signature sign