That is the Sierra Madre treasure of quilter's dreams...lol LUCKY YOU!
I would work at finishing them. Oddly, we were just talking about WHAT to do with these lovely vintage unfinished tops the other day. I think they should be gently (and safely out of reach) displayed as wall back drops in a "coffee-tea" sitting area at our next large local quilt show. EVERYONE loves to see these beauties... finished or not.