They're so worn it's difficult to say. However, the Elichpur mint in India produced a lot of irregularly-shaped copper coins, with shapes similar to your pieces. It's possible these might come from there. Here are a few examples, in the right weight range.
http://search.zeno.ru/index.php?v=0...r&e=&f=0&s=0
http://search.zeno.ru/index.php?v=0...r&e=&f=0&s=0






















