The Chopin 
was often misinterpreted by the engravers as 
– cf., e.g., the Etude in C
minor, Op. 10 No. 4, bar 1. Therefore, it is highly likely to assume that Gutmann reproduced Chopin's autograph correctly, whereas the engraver of FE – not. The inclusion of 
, valid already from the 2nd quaver, makes the difference between both indications purely theoretical.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions, Inaccuracies in FE, fz – f
notation: Verbal indications