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b. 345

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A the  to the 2nd and 6th L.H. quavers are missing. The accidentals were added in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Omission of current key accidentals

b. 347-348

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A there are no accidentals defining fb1, e in bar 347 and a1 in bar 348. In GE (→EE,IE) only the marks in bar 347 were added, while the correct text is present only in FE.
In IE the  to the 1st crotchet in bar 347 (e1) was overlooked.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Errors repeated in GE , Errors repeated in EE , Errors repeated in IE , Errors in IE

b. 348

composition: (Op. 4), Sonata in C minor, Mvt IV

category imprint: Editorial revisions

b. 348

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In the main text we add cautionary accidentals to the 1st chord in the bar, a  to a1 and a  to f2.

category imprint: Editorial revisions

b. 353

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A there is no accidental to the last R.H. note. Chopin's inaccuracy was corrected in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A