A
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The bottom note of the three-note chord in the 1st half of the bar is written down in A quite low, hence FE initially interpreted it as f3. It is evidenced by the traces of a correction on the engraving plate visible in FE copies.
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category imprint: Graphic ambiguousness; Corrections & alterations; Source & stylistic information
issues: Inaccurate note pitch in A, Authentic corrections of FE
notation: Pitch