In this bar the accompaniment evolved through a few versions. Chopin started from the version of AIII, written in As as the first one. The next one was probably the second entirely different version of As (see bars 62-69), rejected – deleted – still at the stage of writing the sketch. In AI and AII two versions were tested, already very close to the one that was finally accepted in A and editions.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Chopin's hesitations
notation: Pitch