FE (→GE,EE) includes cautionary flats before c
2 and c3 in the L.H. GE also added a 
before d2. We omit those accidentals in the main text, since respective alterations at the same pitch were already indicated in the R.H., while performing a scale in the same key by both hands is obvious.
Compare the passage in the sources »
category imprint: Differences between sources; Editorial revisions
issues: Accidentals in different octaves, GE revisions, Cautionary accidentals
notation: Pitch