The dynamic marking in PE looks like 
. However, it seems very likely that in [A] there was 
in this place, which is indicated by:
— the shape of the sign, differing from other featured in PE; its lower part matches the shape of ;
— different performance markings of the introduction, particularly the accents in bars 1-3 and marcato in bar 4;
— the introduction's character, texture, register, and key;
— the sign's position on the stem of the 1st chord in the R.H., which could have impeded its correct reading.
In EF a dynamic marking – – appears only before the 2nd beat of the bar.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
notation: Verbal indications