On the 2nd crotchet GC and the previous impressions of FE include in the R.H. the clearly erroneous c
1-g1. As in the respective place of the previous bar there was c1-g1 in a similar context, it seems to be required to add a 
raising g1 to g1. The addition was actually introduced in EE and GE. However, in the proofreading of FE4 a different changes was performed – g1 was replaced with a1. Both EE and FE4 bear traces of Chopin's intervention, so that each of these versions can be authentic. On the other hand, both sources include changes indicating a revision, hence it is not certain whether and which of them actually comes from Chopin.
In the main text we suggest the version of FE4 due to the unquestionable text at the repetition of this place (bar 170). Cf. bar 131.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Errors in FE, GE revisions, Errors of A, Authentic corrections of FE, Errors of GC
notation: Pitch