Old team signed Baseball - 1974? Cincinnati Reds

I was clearing out an old house today in SW Ohio and discovered this baseball sitting atop a brearu in the living room on a stand.  It appears to be very old and has a ton of signatures on it. Here are a few:

Johnny Bench

Dave Concepcion

Bill Plummer

Cesar Geronimo

Pete Rose

Anyone have any idea how much this is worth and how I should handle it? (where to take it from here)

Fair