Pateneted Greist ruffler. Patent number 2593519. Used but still fairly new. The bluing on the bottom is half worn and half there (4th & 6th scan). Has 12 - 6 - 1 slots. This binder was patented in 1952 after being submitted in 1949. Nice old addition for your vintage sewing machine accessories. $3 shipping to lower 48. As with all my items, refund guarantee if does not work on your restoration project..