A
compare
In A Chopin forgot to write a 
to the last R.H. quaver, raising b
2 to b2. The patent mistake – cf. the next bar, featuring a respective – was rectified already in GE (→FE,EE,IE).
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: GE revisions, Errors of A
notation: Pitch