In the main text we add a cautionary 
to a
in bar 102 and to b in bar 104. The latter is also in FE (→EE), perhaps added by Chopin while proofreading FE1 or earlier, to [FC]. In an analogous harmonic context, in A Chopin wrote cautionary accidentals in bar 271, 273 and 275.
Moreover, in bar 104 we add flats to the A-a octave.
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category imprint: Differences between sources; Editorial revisions
issues: Cautionary accidentals, Authentic corrections of FE, FE revisions
notation: Pitch