Issues : Authentic corrections of FE

b. 139

composition: Op. 38, Ballade in F major

Slur in A (→EE,GCGE) & FE2 (→FE3)

No slur in FE1

..

The lack of slur is certainly an oversight, corrected in FE2 (→FE3). 

category imprint: Differences between sources

issues: Errors in FE , Authentic corrections of FE

b. 150

composition: Op. 38, Ballade in F major

..

A (→GC,FE1) has no naturals before the upper notes of the 4th and 12th semiquaver (b1 and b2). This inaccuracy, characteristic of Chopin, was gradually corrected in FE – the first  was added in FE2, the second in FE3. All these sources have no  before the 7th L.H. note, b. This, however, is not an error because a b in the 2nd R.H. semiquaver is placed with the appropriate  on the lower staff. The remaining editions have a fully correct text.
Moreover, in the main text we remove the  repeated before g1 in the 8th semiquaver, present in all the sources.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Omission of current key accidentals , Authentic corrections of FE , Authentic corrections in GC , Inaccuracies in A

b. 151

composition: Op. 38, Ballade in F major

No sign in A (→EE,GCGE1)

in FE & GE2 (→GE3)

..

The lack of dynamic marking in A (→EE,GCGE1) could result from distraction (or lack of space) connected with the correction. In FE and GE2 (→GE3) a  was added, most likely by analogy to bars 141, 143, 147 and 149.

category imprint: Differences between sources

issues: Errors resulting from corrections , Authentic corrections of FE , FE revisions

b. 151

composition: Op. 38, Ballade in F major

..

A (→FE1) has no accidentals in this bar. Chopin added the overlooked naturals before the 3rd L.H. octave (B-b) in GC (→GE) and FE2 (→FE3). The signs were also added in EE, most probably by analogy with bar 149.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omission of current key accidentals , Errors of A , Authentic corrections of FE , Authentic corrections in GC

b. 154

composition: Op. 38, Ballade in F major

e3-c3 in A (→EE) & FE2 (→FE3)

e2-c2 in GC (→GE) & FE1

..

As a result of misinterpretation of the octave sign, GC (→GE) and FE1 erroneously notate the first two semiquavers of the 2nd half of the bar an octave higher – e3-c3 instead of e2-c2. The error was corrected in FE2 (→FE3), most probably by Chopin.

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Authentic corrections of FE , Errors of GC