It is unclear how to interpret the 
mark written in A over the R.H. part, as it is accompanied by a 
mark under the stave, of almost identical range. Therefore, the top mark must refer to the top voice only and – when interpreted literally – would require the f
2 quaver to be performed softer while realising the crescendo in the bottom voice. According to us, it is highly unlikely that Chopin would have envisioned such a fancy interpretation of this bar, hence in the main text we interpret the top mark as a long accent over f2, which results in a completely natural combination of an accent and a crescendo. The accenting nature of this mark can also be indicated by its beginning, which is slightly before the note.
Compare the passage in the sources»
category imprint: Editorial revisions
issues: Long accents
notation: Articulation, Accents, Hairpins