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b. 67

composition: Op. 44, Polonaise in F♯ minor

..

As was the case with b. 41, in FE (→EE1) there is no  restoring g2 in the last octave in the bar. The mistake was corrected in EE2 (→EE3), where sharps were added next to both notes of that octave. The same version is in GE, which is also almost certainly an editorial revision, since these accidentals are absent in b. 274 and 300, which were marked in [A] in an abridged manner as a repetition of b. 41 and 67 and, consequently, could not differ from them.
In the main text we add only the necessary  next to g2.   

category imprint: Differences between sources

issues: EE revisions , Omissions to cancel alteration , GE revisions , Errors repeated in FE , Errors repeated in EE

b. 67

composition: Op. 44, Polonaise in F♯ minor

No accidental (d) in GE

(d) in FE (→EE)

..

According to us, the version with d resulted from Chopin having overlooked the in [A] (→GE). Therefore, in the main text we include the present in FE (→EE) and added presumably by Chopin while proofreading FE1.

category imprint: Differences between sources

issues: Omission of current key accidentals , Authentic corrections of FE

b. 68-70

composition: Op. 44, Polonaise in F♯ minor

No slur over semiquavers in GE

No slur over quaver in FE (→EE)

..

According to us, the difference between the slurring of GE1 and FE (→EE) may have resulted from different interpretations of the same notation of [A] by the engravers or the copyist. In the main text we prefer the slurs of GE, compliant with the division of this section resulting naturally from the texture. It cannot be excluded that the second slur of FE was supposed to start at the beginning of the bar, like in b. 43-44.

category imprint: Differences between sources

b. 68

composition: Op. 44, Polonaise in F♯ minor

..

In the main text we add cautionary naturals before the D-d octave.

category imprint: Editorial revisions

b. 69

composition: Op. 44, Polonaise in F♯ minor

in GE

No mark in FE (→EE)

..

In the main text we include the arpeggio mark from GE, like in analogous b. 43.

category imprint: Differences between sources