Hello everyone. I've been busy turning wheelweights into nice, shiny ingots. A few years back, a coworker gave me a rather large ingot that his father had used for jewelry making. I believe he used to pound gold links together against it as evidenced by marks in its surface. This ingot has the name Revere stamped across its top. I know Revere to be a battery recycling facility, and this is where the gentleman received it. It is roughly 3 inches tall, 3 inches wide tapering to 2 or so inches on top, and 2 feet long. It weighs 59 pounds with one of its "tabs" cut off before I received it, but should have weighed roughly 61-62 pounds complete. The numbers 45 and 920 are on the back. It scratches with a fingernail and a saw cuts easily into it. Any idea what I have? Should I smelt and look for anything specific? Thank you.