Luigino 1666 Italy Tessarolo Coin Fakes?

Check weight/size/magnetism, should be non-magnetic, 22mm, 2.2g or so, and ring like silver when gently dropped.

Not much attention was paid to either the planchet or the strike when these were made, but those areas of "deposit" on both examples you post are not seen on 8 or 9 genuine coins I looked at on vcoins including some with provenance. It could be the remains of where some jeweler had used solder to turn these two coins into jewelry pieces, or perhaps a sign of a poorly cast counterfeit. I do not know very much about these and can't really speculate much further.

Thanks for the prompt replies!

Unfortunately I can't perform any physical tests on these coins as I do not have them.

My thought was also that there might be a die that had a flaw that was used for both coins. But I've been looking around quite a bit and haven't seen these kinds of flaws on other than ancient coin fakes. But I guess if coins were made using dies instead of striking them they could have gotten the same problems as modern fakes.

I will be sure to check that archive page. It seems useful!