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b. 76

composition: Op. 26 No 1, Polonaise in C♯ minor

gin chord in A (→FE1)

g2 in FE2 (→EE) & GE

..

Same as in bar 44, the  raising g2 to g2 was moved from before the 2nd quaver in front of the first one in the proofreading of FE2 (→EE), most probably by Chopin. The sign was moved also in GE1, which is most probably a right revision of the editor (in the subsequent GE, the  before the 2nd quaver was unnecessarily returned). 

category imprint: Differences between sources; Corrections & alterations

issues: GE revisions , Authentic corrections of FE

b. 76

composition: Op. 26 No 1, Polonaise in C♯ minor

No slur in A (→FEGE,EE)

Our variant suggestion

category imprint: Editorial revisions

b. 77

composition: Op. 26 No 1, Polonaise in C♯ minor

c3 & b2 tied in A (→FEGE1,EE)

No ties in GE2 (→GE3GE4GE5)

..

The fact of leaving the ties sustaining c3 and b2 in FE (→GE1,EE) may result both from an inaccurate proofreading of Chopin and a careless implementation of his notes by the engraver. The revisers of GE2 (→GE3GE4GE5) deleted the ties, most probably after comparison with analogous bar 45, which was corrected by the composer.

category imprint: Differences between sources; Corrections & alterations

issues: Inaccuracies in GE , Inaccuracies in FE , EE inaccuracies , Omitted correction of an analogous place

b. 77

composition: Op. 26 No 1, Polonaise in C♯ minor

A1 & A in A

A1 & A 1 in FE (→GE,EE)

A & A1 suggested by the editors

..

The fact of leaving A1 as the 1st note in the L.H. in FE (→GE,EE) is to be considered to be either an inaccuracy of the engraver at the time of implementing Chopin proofreading or an oversight of Chopin himself. Therefore, we suggest adopting to the main text an A, included in analogous, corrected by the composer bar 45.

category imprint: Interpretations within context; Differences between sources; Editorial revisions; Corrections & alterations

issues: Inaccuracies in GE , Inaccuracies in FE , EE inaccuracies , Omitted correction of an analogous place

b. 77

composition: Op. 26 No 1, Polonaise in C♯ minor

..

In GE1 the engraver overlooked the staccato dot for the 1st quaver in the L.H.

category imprint: Differences between sources

issues: Inaccuracies in GE