I believe this is an example of the famous "bull & horseman" billon jital from northern historical India (including parts of Pakistan and Afghanistan), poorly struck and rather worn. The main clue is the dot within the circle near the center of the second photo. This is typical for the hump of the bull. Also the weight is correct.
Millions of these were made, generally between 900-1300 AD, by numerous rulers, in dozens of varieties. It is often difficult to determine the variety. Here are a few good good sources of information.