The missing 
in FC (→GE1) could be an oversight of the copyist, corrected in GE2 (→GE3), probably on the basis of analogy with b. 74. The missing 
over the mordent must be Chopin's inaccuracy: see b. 74.
A similar situation is to be found in b. 657.
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category imprint: Interpretations within context; Editorial revisions
issues: GE revisions, Omission of current key accidentals, Last key signature sign, Errors of FC
notation: Ornaments