dphobby
In the end I would venture to say that you will end up loving that little gun. If it is in good shape you will not believe how accurate it is....
http://www.whitemuzzleloading.com/
Go down the page and select 'G Series'
Wait a minute - I am not as good as others identifying Whites, but with a 26" barrel and the pictures you provided - that might be a model 97.
Dave of UC will know for sure...