I agree with Keys60 about value, work needed. But that looks like a decent typical 1900s design, lovely case style. That is just the sort of piano I would like to find here in Switzerland, a 1920s American brand in that sort of shape, that sort of price!
I wouldn't sand it (too much hassle & expense). I prefer the look and feel of the case when oiled, when, if you look carefully, you can see 100 years of use and abuse. Oil, wait a few months, then a hard rub, and wax after the summer is my approach.
Glue back all loose veneer before you oil the case- I have done that, but you need to wait a few years before you can glue back any veneer that comes newly loose, so do all that first! Also, no oil on the action.
If the pin block turns out to be shot, it should still hold tune for a couple of weeks, you might have to tweak it before you play.
I would hold off gluing the ivory for starters. You need special glue to stop it staining. I have never done that. Read through some of the other threads on here about tuning, hoovering out the action and case, cleaning the strings off a bit.
All this takes time, so a good honest tech would probably say it is not worth fixing at $45 an hour or whatever when a perfect piano might be $1000.