It looks like it, but I've never met the Ted Williams 531 in person, so take this opinion with a grain of salt. I'd pick it up and feel how heavy it is. I've have a couple 'Free Spirit' 3-speeds and have had a 'Free Spirit' 10-speed. They all say "made in Austria" but are as heavy as any other old department store 3-speed or 10-speed. If the frame was remarkably lighter, say light like my 531 trek is, it'd be a dead give-away that it was indeed the 531.