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b. 67

composition: WN 17, Polonaise in B♭ major

..

Lack of the  raising f1 into fin JC and PE is a patent Chopin's oversight.

category imprint: Differences between sources; Source & stylistic information

issues: Accidentals in different octaves , Inaccuracies in PE , Inaccuracies in JC

b. 67

composition: WN 17, Polonaise in B♭ major

No slur in JC

Slur in EF & PE

..

Compatible versions of EF and PE suggest an oversight of the slur in JC. However, it is possible that the slur appeared in [AI] later or it was Fontana who added it in his edition, knowing or guessing Chopin's intentions in relation to this detail.

category imprint: Differences between sources

issues: Errors of JC

b. 67

composition: WN 17, Polonaise in B♭ major

..

The cautionary  before a1 is already in JC and EF.

category imprint: Differences between sources; Source & stylistic information

issues: Cautionary accidentals

b. 67

composition: WN 17, Polonaise in B♭ major

Double bar-line in JC

Repeat sign in EF & PE

..

Lack of the indication of repeat of bars 52-67 in JC may correspond to the notation of [AI]. Chopin's autographs reveal an inaccurate writing of repeats and other abbreviations of notation in dance forms, which was possibly a result of the generally known conventions in this respect. 

category imprint: Differences between sources

b. 68-69

composition: WN 17, Polonaise in B♭ major

No slurs in JC & EF

Slurs in PE, literal reading

Slurs in PE, contextual interpretation

..

In the main text we give the slurs of PE. When read literally, they seem to embrace four notes in bar 68 and five in bar 69, which in a situation of an accurate repetition of the text, as far as the pitch and rhythm are concerned, seems to be unjustified. The range of the slur in bar 69, due to placing the crotchet on the upper stave, is rather doubtless, which cannot be said of the slur in bar 68 (in PE on the lower stave), whose intended range could be misinterpreted.

category imprint: Interpretations within context; Differences between sources

issues: Inaccuracies in PE