I am afraid, this seems to be a copy of the Kabul to Kandhar Medal. The finishing of this medal suggests this to be a cast copy.
The original ones are very difficult to find, and even if you find one, the price is expected to be around 1000 USD.
Recently, some such medals were for sale on Ebay India, by a Delhi based medal dealer. He confirmed to me that they were cast copies.
I have attached 2 images of the original ones (Source: OMSA database and Liverpooll Medals site) for the comparison.