It seems that Chopin changed the concept of dynamic markings in this and the next phrase – in A one can see in this bar a pair of 
signs, out of which the first was then deleted. While writing analogous bar 40, the composer put there only the sign of a long accent over the chord in the middle of the bar. According to us, it means that the slightly longer sign in bar 38 should be interpreted in this way.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations; Source & stylistic information
issues: Long accents, Errors in EE, Corrections in A, Deletions in A
notation: Articulation, Accents, Hairpins