EPBOT shares the tip to shine your dark coins up using Tarn-X to get rid of all the tarnish, you can get it from Amazon. After that, line up the coin next to each other with glue to keep it from moving. Pour over the coat (epoxy works good here) to give it a protection and soft finish.
So whenever you got a corner table, or a bench, even kitchen counter top and floor, you can turn them into this fabulous million-looking furniture in a weekend!
Penny Top Table Via Heart Maine Home (Photo: OBN)
Jonny Carroll showed his way to make the square table top /coffee table with epoxy as following: