Issues : Errors in GE

b. 63

composition: Op. 50 No. 2, Mazurka in A♭ major

Accent in A1 (→FEEE)

No mark in GE

Our variant suggestion

..

In the main text we include the accent of A1 (→FEEE) (in a variant form), since in this case Chopin's intentional omission of a mark seems to be less likely. GE feature an accent in analogous b. 79, which means that it was most probably present in [A2] in the discussed bar.

category imprint: Differences between sources

issues: Errors in GE

b. 69

composition: Op. 50 No. 2, Mazurka in A♭ major

"Vertical" slur in A1

No slur in FE (→EE) & GE1

Conventional slur in GE2

..

The missing slur next to the grace note is an oversight of the engraver of FE (→EE) and most probably also of the engraver of GE1. In the main text we give the slur of A1. The conventional little slur added in GE2 is an arbitrary revision.

category imprint: Differences between sources

issues: Errors in FE , Errors in GE , GE revisions

b. 72-75

composition: Op. 50 No. 2, Mazurka in A♭ major

No marks in A1 (→FEEE)

4 accents in GE1

3 accents in GE2

..

Just like in the previous bars, 4 subsequent accents must have been added in the proofreading of GE1 or earlier, still in [A2]. The mark in b. 74 is poorly visible, as a result of which it was overlooked in GE2. According to us, it is, however, a print defect and not a remaining element after removal of that accent.
The marks in GE1 slightly differ in size, which we, however, consider to be irrelevant: see the note in b. 60-64.  

category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations

issues: Errors in GE , Authentic corrections of GE