Like in the previous two bars, we assume the bottom arm of the 
hairpin in A to be reliable. The mark is absent in all the remaining sources, which is almost certainly a result of oversights:
- A few overlooked elements prove that Fontana was distracted at the time of writing the last line of FC – in addition to , it is also the L.H. slur and dashes marking the range of crescendo that are missing.
- While working on the last line, the engraver of FE probably omitted the stage of adding dynamic markings, since the hairpin is neither in b. 10 nor in b. 11.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: Errors in FE, Scope of dynamic hairpins, Errors of FC, Inaccuracies in A
notation: Articulation, Accents, Hairpins