hi all this is my first post ( please be gentle) ,to start off im real new to the airgun world but have managed more through luck than judgement to obtain a diana model 10 mk1 pistol,its still in what i think is the origanal brief case with all its bits and bobs,this is where im lacking ,what did come in the brief case ?.the other thing is how much is it worth as i have no idea whats so ever as its not really what i would like to use so i will probable sell it if i can find a buyer ,any help would be gratefull cheeers Gaz Q