Incused: BEARDSLEY on one rib and PATENTED on adjacent rib This is a cast iron pin, four of which were removed from the side of an old brick building

Dimensions: Mortar Screw: 1/2 inch D X 2-3/4 inches L Center Shank: 1-1/2 inches D at widest point X 3 inches L Insulator Threads: standard 1 inch D X 1-7/8 inches L