Went through some of my non-found coins the other day with the intention of making some more of those coin rings. I haven't made a coin ring with a complete blank polish on the outside for a long time, so I used the half dollar for this one. All the rest had the information on both the outside and inside.
Below are the finished coin rings. It took me about 6 hours to make these. Hand made too, no lathe, just a dremel, Electric drill, hammer & ring mandrel.