An additional c2 in the chord must be a mistake, since the note does not result from the link to the previous chord; it unnecessarily precedes the next, accented minim. We are most probably dealing with an unfinished proofreading of a major mistake – the traces of removing c3 visible in this place in FE may indicate that it was the 1st chord from the previous bar, c2-f2-c3, that was printed here in the first place. While proofreading this mistake, both missing notes were added (f1-a1), but it was only c3, going beyond the target chord, hence easier to remove, that was deleted.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in FE, Errors resulting from corrections
notation: Pitch