Also, too; If it was found "by the trash"--not in it, you'll note--it could have been meant to be found. My guess is someone cleaning out old stuff opened it, thought "weird, too cool to trash, can't keep, too much crap, gotta go, can't trash, put to one side maybe someone will adopt it".
Hoax? Who the fuck cares? It's just plain awesome. Even if it was staged, the staging itself is pretty cool. Mixing Roller bearings with Ezekiel's Wheel is a fucking stroke of genius!