p. 3, b. 36-54
The lack of e1 in the 2nd L.H. chord is most probably due to difficulties in reading A. In Chopin's autographs, internal chord notes placed on ledger lines are often barely visible. This leads to their presence (or lack of) being hard or even impossible to ascertain. Cf. e.g. Etudes in G Op. 10 No 5, bar 15 or in A Op. 10 No 10, bars 76-77.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Inaccuracies in FE, Uncertain notes on ledger lines
Missing markers on sources: FE1, A, FE2, FED, EE3, EE4, FEJ, FES, GE1, GE2, GE3, GE4