Rhode Island Quarter Struck On A Dime ?

Agreed with PMD.
John1

Maybe the start of a love token?

I agree with this idea, and being part of a magician; coin might (note that word) also account for the discolored area. Sometimes the magicians coins are tooled to make two headed or two tailed coins. A shell and its insert are made.

Since the insert is meant to stay inside the shell, a blob of flux and solder are put between the insert and its shell. Then everything is heated to melt the solder. Somehwere around here I have one that came apart (don't know how). The mark on yours reminded me of it.

While I "Kind of Agree" I have a single issue.

The silver area is larger than the copper under it. The scratches on the base are from me trying to scrape the glue that was holding onto a card.

The copper core is a smaller diameter and has no tooling that I can see under a loop. To mill this, you need to secure it to something, and that would leave marks I would think somewhere. The copper core being smaller that the top is an issue as well.

Now I also think something is not right, but the How and the Why is where I am at.

I agree with that this is half of a Magician's coin. That would explain the machining and the glue/flux residue.