b. 12
In GC (→GE) and FE1 (→FE2→EE1) there are no naturals raising the 10th quaver to d1(2), which in this context is a patent oversight. The sign in the R.H. was added in the proofreading of FE3 (→FE4,FE5), whereas in FE5 a was added also in the L.H. A natural in the part of the R.H. is also in Afin, in which, due to the abbreviated way of notation of the L.H., it refers to both hands.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Inaccuracies in GE, Inaccuracies in FE, Omission of current key accidentals, Authentic corrections of FE, FE revisions, Inaccuracies in GC, Inaccuracies in A
notation: Pitch