I was finding these under the seats of cars. At the time I was just recycling the looms & getting the cast Ali cases.
Didn't know about the Gold at the time.

Looking back I think there probably was a good amount of gold in there, all the vibrations & heat etc.
Mid 80's Jap cars had heaps of wire in them, amazing amounts of copper wire, 'thicker than your wrist' looms across the dash.