The version of GE1 is certainly erroneous: it is most probably a revised Terzverschreibung error, by adding a 
. Chopin restored the chord with c2, written in A, in a proofreading of FE (→EE). At the time of executing this proofreading, a superfluous was moved together with the note head.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in GE, Terzverschreibung error, GE revisions, Authentic corrections of FE
notation: Pitch
