This bracket carries a white VICTOR marked U-648 on its top; bracket embossed inside "18 IN; HEAD 1 IN". Appears to have been formed to attach to a building a certain way as its base and top are curved inward. An interesting item to be sure. U-648 appears to have sulpher cement holding it to the screws. This came out of an old mine area in SW Colorado. $120 and that includes postage. Call it $70 w/postage thanks!