I didn’t know this was a thing, but apparently you can make rings from coins. There are a ton of videos out there on how to do this (basically, you hammer down the edges into a ring shape, then drill out the middle, at least that is how they appeared to have made this one).
Well, I found one of these yesterday, at the same site I’ve been working recently that has given up some barber silver and a few IHs. You can see the lettering from the edge of the coin on the inside of the ring, if you look hard enough.
This one was made from an SLQ; you can see the words “QUARTER DOLLAR” and the stars. No date, so it was probably one of the dateless ones. Good thing, I suppose, as I would have had a heart attack if it were a 1916.
Also found a regular silver quarter (1934), which I got pretty well with my digger. Oh well, good thing that wasn’t a 1916 SLQ either.