The second dynamic mark between the staves is very short, as a result of which it can be considered an accent. This impression is enhanced by the position of the mark, directly over the 8th L.H. quaver, slightly lower than the preceding 
mark. Nevertheless, both the shape of the main melodic line and the harmonic course indicate the need for diminuendo in the final part of the bar (starting from the 4th beat), hence in the main text we reproduce this mark as a 
hairpin (cf. also the longer mark in the next bar, placed higher). In GE a mark of an accent length was placed at the same level as the preceding mark, as a result of which the remaining editions do not include the misleading association with the 8th L.H. quaver.
Compare the passage in the sources»
category imprint: Graphic ambiguousness; Differences between sources; Editorial revisions
issues: Scope of dynamic hairpins
notation: Articulation, Accents, Hairpins