Debating a Smith Corona 1903A3 Purchase

[JeffreyJ5]

After looking at the 5th photo again, you can see the area right below the rear sight and above the cutoff has been machined out to eliminate the weld. I would say this definitely was a drill rifle.

Your response encouraged me to grab the rifle and take it down to the work bench to give it a complete clean (I ended up purchasing the rifle for $1,400). I've taken some more detailed photos of the area. Would your guess still be that it is a recovered drill rifle? Should there be anything else I should be inspecting? Any concerns, considerations, etc... if it is a recovered drill rifle? Thanks in advance!