In FES there is a small, diagonal line before a distinct fingering digit (2), which may be interpreted as 1, which would then refer to the e
grace note. We do not include that possibility in the main text, since the meaning of that line is uncertain (not all pencilled marks in the Chopinesque teaching copies are interpreted in a satisfactory way; there are also some that probably do not carry any meaning at all – they are random traces of gestures of a hand holding the pencil – see, e.g. the 4th line on this page of FES, b. 17-21).
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category imprint: Differences between sources
issues: Annotations in teaching copies, Annotations in FES
notation: Fingering