I've not had much success in cleaning silver strikes. They always look artificial. I've heard that some people put tomato juice on tarnished brass rim.

When common strikes tarnish, nobody wants to trade for them, or purchase them. Once they've been subjected to cleaning solutions, its only a matter of time before they tarnish again. It's best simply to turn them back into the cage for full face value ... if the Nevada casino is still accepting them.

All A.C. casinos still accept any of their silver strikes for redemption.