Here was me thinking it was a prop. Do also tell us why you have it.

There was a TV programme some time ago about Sahara tribesmen, and they carried those things as a matter of course. Made from Toyota bumpers, said the script. Obviosly ready to take their place in the modern world.
Not the kind of Toyota that I owned. That had plastic over pressed-steel. Pre-war cars had bumpers you could make swords from.