The Ruger No. 1 is a sweet looking rifle, except the cut in the forearm near the end of it. Has it always had that? Jack.
The light & medium Sporters, as well as (apparently) the Tropical models all have the A. Henry fore arm w/ the "cut".
The gent that I bought my #1S (45-70) from told me the term for that feature, but I can't quite remember. Senior moment.
The purpose for it is un-clear, but I've always felt that it was originally (waaaay back) designed for "shooting sticks" / aka portable bipod.
Maybe someone else can provide a little extra info.
What ever your feelings about the appearance of the fore arm, I can only recommend that you buy the rifle. The "cut" will grow on you.......