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b. 39

composition: Op. 27 No 2, Nocturne in D♭ major

..

In GE2 accidentals were added before c sharp2d sharp2   and e2 in the demisemiquaver quintuplet, despite the fact that relevant accidentals are already present in the first half of the bar. 

category imprint: Differences between sources

issues: GE revisions

b. 39

composition: Op. 27 No 2, Nocturne in D♭ major

cresc. in A

..

The sources differ in the placement of the indication cresc.; in subsequent editions that indication moves farther and farther apart from the place where it was originally written by Chopin.

category imprint: Differences between sources

issues: Inaccuracies in GE , Inaccuracies in FE , EE inaccuracies

b. 39-40

composition: Op. 27 No 2, Nocturne in D♭ major

Fingering written into FES

No teaching fingering provided

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FES

b. 39

composition: Op. 27 No 2, Nocturne in D♭ major

..

In A, three consecutive accidentals for three consecutive semiquavers, c sharp1e and G sharp1, are missing.  The first accidental was supplemented in GE (→FEEE), the second one in GE2, and the third one in FE (→EE) and in GE2.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Omission of current key accidentals

b. 39-40

composition: Op. 27 No 2, Nocturne in D♭ major

No accents in  A (→GE)

Accents in FE

..

When correcting FE (→EE), Chopin added accents under bass notes in the middle of each of those bars. In EE, a vertical accent was used in bar 40, which is characteristic for that edition. 

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Authentic corrections of FE , Authentic post-publication changes and variants