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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

..

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. 40

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

..

In A (→GE1) there is no  raising e flat2 to e2. Chopin's omission was corrected in FE (→EE) and GE2.

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Omission of current key accidentals

b. 40

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

..

Missing in A (→GE1FE) are the  raising d flat to d sharp and G flat1 to G sharp1. In EE the first one is still missing and the second one is supplemented. GE2 has both sharps.

category imprint: Interpretations within context; Differences between sources

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

b. 41

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

..

In A (→GE1) there is no  raising A flat1 to A1. This inaccuracy was corrected in FE (→EE) and GE2. The natural was also added in GET.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Accidentals in different octaves , Omission of current key accidentals , Annotations in GET