Need help ID of 1867 Coin CuffLinks

[bellalupo]

Might be South American coins that were made into cuff links!
Any help is greatly appreciated. Thank you

[AG2012]

Pedro II of Brazil
https://en.wikipedia.org/wiki/Pedro_II_of_Brazil
Depending on size could be either 200 (19 mm) or 500 reis (25 mm) , silver .835.

Regards