Yes all variations of same RamaTanka, all appear to be silver washed brass. The reason could be because they were produced and used by so many different places in India for past couple of centuries.
Thanks Sujit
I have entered them on the Numista link that you gave.
There is one more temple token that is smaller than the others and although the reverse is similar, the obverse is quite different. I will scan it over the next day or so and enter it on the forum.