one of two unusual late 19th or early 20th century ornamental cast brass salvaged chicago doorknob locksets

one of two matching late 19th or early 20th century antique american ornamental cast brass victorian era passage door locksets. the exact fabricator is not known. each passage door set consists of matching drum-shaped doorknobs with knurled edges, two backplates, and mortise lock with brass faceplate. the american victorian era locksets were salvaged from a chicago house undergoing demolition. priced individually.