yeah those are cool! the guys that are REALLY good at it can make sure to preserve the date and the "in god we trust" which will show on the inside and outside of the band. I've wanted one for awhile just haven't made the purchase yet. I'm not willing to mess up any silver on my own
I had a friend that worked in the mill with me years ago, he was a crane operater and in between lifts he would make rings like that, but would use a heavy tablespoon to pound the coin they really came out nice.