One cannot see the quaver flag next to the final a1 on the copy of GE1a displayed in mUltimate Chopin. According to us, it is a result of this element having been poorly imprinted due to the wear and tear of the engraving plate, hence the flag may be visible on a different copy coming from this impression. Anyway, GE2 (→GE3) include the correct text.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Source & stylistic information
issues: Errors in GE
notation: Rhythm