The notation of accidentals in these bars is very careless in A, although it does not lead to textual doubts. In bar 37 Chopin omitted the flats before the 1st (g
), 2nd (g1) and 9th (c1) notes in the L.H. and before the upper note (c4) of the sixth on the 2nd quaver in the R.H. Moreover, the lowering g2 to g2 is written only before the last quaver in the R.H. In bar 38 there are no flats before the 4th (g) and 5th (g1) notes in the L.H. In FE only the first necessary flats in the parts of both hands in bar 37 and a cautionary 
before c2 in bar 38 were added. In GE all necessary signs and a superfluous before c3 on the 8th quaver in bar 37 were added. In turn, the cautionary in bar 38 was not included, which probably means that it was added during the last stage of proofreading of FE. EE also has the correct notation, including the aforementioned natural. At the same time, EE3 gives only the necessary signs, while in EE4 two unnecessary flats featured in GE were also added.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Accidentals in different octaves, GE revisions, Omission of current key accidentals, Errors of A, Authentic corrections of FE
notation: Pitch