This item is a vintage Monarch Foods shelf-edge price clip, likely dating back to the 1920s.It features the "Monarch" brand name with "Super Quality" text and a "18c" price tag inserted.These metal clips were used in grocery stores for point-of-sale displays to hold price information for Monarch brand products.The manufacturer, Reid, Murdoch & Co. of Chicago, IL, produced these collectibles along with their branded food cans.