Unidentified piece of copper_is it a coin? [решено]

Hi everyone

I found this piece while metal detecting on the shores of Mauritius Island.

Material is copper and approx 2cm diameter.
Is it a coin? No clear markings can be identified.



Thanks for your help.

Hello
this one i think

In fact the sea water is very corrosive.

Цитата: "gros"​Hello
​this one i think

​I think you are right, the coin has been cut to make it a pendant.

Thanks