2-c3 in 
The version of GE2 (→GE3) is most probably revised – c3 on the 4th quaver was removed in order to homogenise the bar with the previous one. The version could have been intended by Chopin if we were to admit that the third in this place is an error of the engraver and that Chopin did not pay attention to it neither in FEG nor in the proofreading of FE and base text to EE and the pupils' copies.
Compare the passage in the sources »
category imprint: Differences between sources
issues: GE revisions
notation: Pitch