Antique Art Nouveau JUDD English Bulldog Book Rack Collapsible Book Ends Shelf

Condition: pre-owned, tarnished, two screws look like they were replaced, needs are cleaning

antique shelf with collapsible book ends.  The book ends have an embossed English bulldog on them.  The shelf is 12 inches long and about 5 inches deep. Can expand to 21" Please see photos to determine exact condition and detail.