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b. 51

composition: WN 17, Polonaise in B♭ major

..

The cautionary  before eis only in PE.

category imprint: Source & stylistic information

issues: Cautionary accidentals

b. 51

composition: WN 17, Polonaise in B♭ major

Dotted crotchet in JC

Crotchet in EF & PE

category imprint: Differences between sources

b. 51

composition: WN 17, Polonaise in B♭ major

..

JC has a cautionary  before a1, which is unnecessary in this context.  

category imprint: Source & stylistic information

issues: Cautionary accidentals , Last key signature sign

b. 51

composition: WN 17, Polonaise in B♭ major

No sign in JC & EF

 in PE

category imprint: Differences between sources

b. 51

composition: WN 17, Polonaise in B♭ major

..

Neither in PE, which certainly recreates the layout of [A] accurately, nor in JC, the end of the Polonaise is explicitly marked. Double bar lines, the indication Trio in bar 52, and the generally known dance form allowed to understand the order and scope of particular sections without any difficulties. 
Cf. the note concerning bar 103.

In EF, all performed sections are written out entirely, therefore, there is no need to insert the hints clarifying the piece's form.

category imprint: Editorial revisions; Source & stylistic information