Vintage Arm / Ankle Splint

Vintage Medical Splint.  This was found in a stash of 1940s and 50s era bandages we picked up a few years back.  It’s fiberboard, a resin laminated fabric.  It’s riveted together, no bend at all.  Looks like it’s designed for an arm or maybe a leg- not the walking boots of today however.  Anyway, it’s a unique piece of medical history great for a hospital display or medical impression. No maker marks, dates, or any other stamps.