Can someone help identify this rifle. I have a Interarms 30-06 I just bought. Fellow I bought it from says it was given to him new in 1975. It does not say Mark X on it. It does have 3 curious stamps. And says Alexander Virginia Interarms Manchester England. It has the Mauser type bolt action. And real nice Walnut stock. Did this company import some that did not have the Mark X on them? Or is this something else intirely? It also has open sites and is tapped for scope.