In A1, just like in b. 11-13, of which the discussed bars are a repetition, there is no 
mark, whereas the range of the 
hairpin is unclear. In FE (→EE) it was reproduced on the basis of the range of the top arm; however, according to us, it is the bottom arm that should be considered reliable, which results in a range equivalent to the version of GE. The absence of the mark in EE means that it was added by Chopin in the last phase of proofreading of FE. In the main text we give the version of GE, in which both marks most probably reflect the notation of [A2].
Compare the passage in the sources»
category imprint: Differences between sources
issues: Scope of dynamic hairpins, Authentic corrections of FE
notation: Articulation, Accents, Hairpins