Original 1920's New York City NYC Humpback Porcelain Sign Frame Corner Bracket. Offered here is genuine, original cast iron frame corner bracket. This corner bracket would have wrapped around a light post and allowed two frames to be mounted 90 degrees apart. One hole is deformed but a frame would still mount to it just fine. This corner bracket weighs a hefty 11 pounds. Shipping is priced accordingly because of the weight and size. Measures 11" wide by 9" tall.