I just found interest in IPS silver coins. And most of these IPS 1 Rupee coins weigh between 10.5 grams to 11.5 grams. I have searched the catalog thoroughly. But, couldn't find any mention of silver content percent in them. Does anyone of you have any idea about that?
I'm mentioning a few for reference.
https://en.numista.com/catalogue/pieces70951.html
https://en.numista.com/catalogue/pieces52231.html
https://en.numista.com/catalogue/pieces61875.html