FSJeeper
You've already discovered the main issue with these, the wrist cracks. I would ask to see dummies cycled through the gun and ask for a firing tests unless it is dirt cheap. Do check the bore.
They were only produced for a short time, about 1925 to 1929, give or take. There were early and late versions, usually identified by whether the fore end screws were all on the right side (early) or one on each side (later).
Sav22 is way more knowledgeable on any of these pumps from Savage so standby to see what he has to say. Don't plan on using high velocity ammo with this if you get it. Cool old guns, I have 2, one early and one later version. Both are cracked.
