In FEH, in 4 places sharps reminding the correct pitch of the grace notes are to be seen. The marks, written by a foreign hand, are present before e3 on the 4th beat of bar 101, d3 on the 4th beat of bar 102 and a2 on the 3rd and 4th beats of bar 103.
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category imprint: Source & stylistic information
issues: Annotations in teaching copies, Cautionary accidentals, Annotations in FEH
notation: Pitch