The version of the sources, in which both the second and the last quaver feature d2 (without any accidental), is almost certainly due to Chopin's oversight, who, after writing a lowering d2 to d2 at the end of the preceding bar, did not notice that he should have repeated it only just 2 quavers farther on. This assumption is confirmed by an analogous sequence in bar 68, which includes a respective . Taking into account the above, in the main text we add a in the discussed place, as well as a , necessary in this case, restoring d2 at the end of the bar.
Compare the passage in the sources »
category imprint: Editorial revisions
issues: Omissions to cancel alteration, Omission of current key accidentals, Errors of A
notation: Pitch