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b. 96

composition: Op. 12, Variations in B♭ major

..

In FE the  at the beginning of the bar was placed too low, next to a1, which does not require an accidental. However, the patent mistake was corrected only in GE

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in GE , GE revisions , Authentic corrections of GE , Errors repeated in EE

b. 99

composition: Op. 12, Variations in B♭ major

..

In the main text we omit the  to c2, unnecessarily repeated in the sources in the 2nd half of the bar.

category imprint: Editorial revisions

issues: Cautionary accidentals

b. 100

composition: Op. 12, Variations in B♭ major

..

In the main text we add a  restoring f1 at the beginning of the 2nd half of the bar (omitted in all sources).

category imprint: Interpretations within context

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

b. 101

composition: Op. 12, Variations in B♭ major

..

In the main text we add a cautionary  to d1.

category imprint: Editorial revisions

b. 105

composition: Op. 12, Variations in B♭ major

..

The GE1 version, featuring a1 as the R.H. bottom note in the 1st half of the bar, almost certainly resulted by accident from the FE inaccuracy. In FE the  lowering a1 to a1, which should have been directly before this note, was placed by mistake as a third flat in the key signature, hence the GE1 engraver, having no reason to check the key signature, omitted it. GE2 and EE include the correct text, the only authentic one, featuring a1.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Inaccuracies in FE , Errors in GE , GE revisions