Cavalry sabre with a parabolic blade

[fernando]

Originally Posted by kronckew

that looks like it's be good for instances of someone sneaking up behind you. you would have to be careful you don't stab yourself in the back!

Your damned right
From the same link abovementioned:

In AS ARMAS e OS BARÕES by Eduardo Nobre, he cites the blades of some local cavalry sabres of the (XIX century) period in which, when the horseman pulled it back for a stroke, the blade point touched the opposite shoulder ... if you know what i mean.