When we lived in Florida in the early 1980's there was a store in Titusville that sold mill ends from factories that made bedding. I think it's possible that I may recognize the type of machine quilting that we see on the back of this as what was available at the time. It was done with poly batting, and the machine made stitch-like marks where it sealed the layers together. My hunch - and it's just a hunch! - is that whoever made this used that type of pre-quilted material for the back and batting and used the tying method to attach her pieced top to it. If I'm right there will be an extra layer of fabric under the pieced top and then the polyfil batt and then the backing that you see.
Ha! I just read the post above mine and see Barb had the same thought, but was much less wordy!
Last edited by Rose_P; 03-12-2018 at 04:00 PM.