In EE, indicating a fingering digit only on the last note of the bar suggests that it is the previous scheme that applies to the previous ones, which results in the 3rd finger on f
2. In spite of the apparent concurrence, Fontana's fingering does not have to be fully compliant with the fingering of FED, written most probably during lessons with Chopin.
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issues: Annotations in teaching copies, EE revisions, Annotations in FED
notation: Fingering