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Pitch

b. 83

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

a-e1 in A (→FE→GE,EE)

a-c1 suggested by the editors

category imprint: Editorial revisions

issues: Errors in FE , Omitted correction of an analogous place

b. 84-85

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

A & A1 in FE (→GE,EE)

A1 & A in FE (→GE,EE)

..

In A the first quaver in bar 84 is an A1, whereas in bar 85 - A. Chopin swapped them in the proofreading of FE1. The composer performed a similar correction also for bars 52 and 53. 

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE