Most modifications effect a guns value (it goes down not up). Of course the Lyman 54 was, for the most part standard, on the later 20/26 version. On the earlier 1920, both the Lyman 54 and Marbles S20 still seem to be highly sought after. When I went looking for a model 1920 I wanted the 54 on it regardless of being original or not. I even think the Marbles S20 would not detract from a rifle if the overall condition of the rifle is excellent along with the sight.
I've always assumed that the S20 and 54 were added by owners/gun smiths (on the earlier model 1920's, not talking about the improved 20/26), did savage ever add these at the factory?
