The first one is from India I think, but don't know where, Kushan maybe? 4.86 grams and 18 mm in diameter.
The second one I think is Kushan, but I can't find one exactly like it. 3.2 grams and 18.5 mm in diameter.
The third I think is a Judean prutah but I again cannot find one exactly like it. 1.46 grams and 12 mm in diameter.
Fourth one I have no clue where it is from. 1.06 grams and 14 mm in diameter.
Any help appreciated.