Interesting observation, yesterday I was considering a treatise * Opus Amplissimum de Arte Athletica (Cod.icon. 393) * by Paulus Hector Mair ~ 1540 year.

The pictures seemed very similar to me, I took one and put it on top. The fact that this is a very ancient form, that's for sure, I saw the same blades from the Bronze Age, but the coincidence of the ratio of the lengths of the blade, and even the cross-sectional profile of the blade, the handle and the width of the guard (except for the shock pommel) is very surprising and pleasing.