This is a family heirloom. Perhaps it's not worthy of museum display but certainly worthy of the tlc of something made as a special gift by your grandmother's grandmother on your grandparents' special day. To use it routinely and put it through everyday use and repeated laundry probably will not be the best thing for it. Do bring it out to display and enjoy in your home but use it gently and remember these women who went before you. No doubt the quilt was hand pieced and hand quilted so a lot of time, skill and love went into making it. And apparently it has been protected through the years as something of family importance. Treat it with care.
And by the way--does it have a label so anyone who sees it in years to come will understand its significance?