Faded Fireball from the Alabama barn

This snowball quilt (rather faded fireball) is from Great Aunt Carl and the Alabama barn!  She gave it to my sister.  I replaced the binding.  There is question on its age.  Great Aunt Carl insists that her mother made it, but Great Aunt Carl is 86 and her mother died 70 years ago or so...so I do not know.  Seems to me that the back is feedsack, but again I am not sure.  Aunt Carl liked to keep old things in the barn which is where she went for this when my sister and I visited and showed an interest in family quilts.