Lack of the c1 note on the 2nd beat of the bar is probably a consequence of difficulties in the interpretation of the autograph. In Chopin notation, the notes on ledger lines, devoid of a separate stem, are sometimes barely visible and determining their possible presence tends to be very difficult. Chopin added this note in FEG (→GE) and in the base texts to FE and EE. Respective notes are absent in FE0 also in analogous bars 80, 112 and 172 (yet they are in bar 268). In FEG (→GE) Chopin added them also in these bars; most probably he did it also in the base text to EE, yet not in FE1.
category imprint: Differences between sources; Source & stylistic information
issues: Uncertain notes on ledger lines