Request to identify Roman coins attached to magnets [solved]

It's a 15mm coin that sticks to a magnet. When viewed with the naked eye, the outside is light, so it is expected to be silver. The inside seems to have an iron content when oxidized. 

1. Does anyone know what kind of coin it is?

2. Is this a counterfeit coin manufactured in the Roman period? 

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

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