The first and last notes of the group of 4 small notes ending the trill are written in A (→GE1→EE,GE2→GE3,FESB) without accidentals. The use of G at the beginning of this group, natural in this context, is confirmed by the 
of AsI and by the added – along with a cautionary 
to g
– in the stage of proofreading FE1.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Cautionary accidentals, Errors of A, Authentic corrections of FE, Last key signature sign
notation: Pitch