Umm, there is an additional factor to be considered. The original WAS in E AND they probably tuned to A=435 in Vienna back then. "Original pitched performances" should thus be BETWEEN Eb and E.
It is not safe to assume that any of the recordings available with modern instruments represent anything historical. It is easier for a trumpeter to play in Eb and that is why there are arrangements in that key. The audience is just interested in the music............. What's a half step between friends?
Check this link out:
History of Pitch - Tuning Forks A440 C523.3
I have an F trumpet made in Austria around the turn of the century. It is pitched in F# ( A=465)