Can anyone tell me if this is Roman or what it is

its defy silver but thats all i know

It looks like a Delhi Sultanate silver coin.

thank you , Do they have much of a value as i have 10 of these

Its 1 Rupee coin of Shahjahan -   India - Mughal Empire  (Lahore Mint)
https://en.numista.com/catalogue/pieces71726.html

Normally this coin sells for around 25$-30$

2nd picture is up side down.
First picture , in the square is the kalima
http://en.wikipedia.org/wiki/Six_Kalimas
Only the first is used on coins
The provided link by Parimal is correct.
The 'zarb' on the coin means 'struck' or 'struck at'
It looks like this:

This coin has a lower value due to 'cleaning' damage.
£10-15
If you really want to 'enhance' the coin, use only some aceton to remove grease/fat.
But I would not do it