Does anyone on this list know of a source of information on 19th
     Century shotgun identification and care?  The shotgun had a thin layer
     of slight rusting on it (the original browned finish is slightly
     detectable) with some missing parts that seem to have been broken off.
     Should this rust be removed and if so how?  Should the missing or
     damaged parts be replaced?  Any advice on this would be greatly
     appreciated.
        Thank You,
        Joseph Reed