It was listed by Serpentine Antiques. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Serpentine Antiques has dated this piece to the 1890s.
Both arch topped ends with cut outs slide out to a long length, and fold flat on brass hinges.

What a great addition to your desktop or shelf, to keep your library or reference books in order.
Size-closed 22 inches long by 8.5 inches wide by 9.5 inches high. Fully open-35.5 inches long.
Charles Westerton owned and ran the English and Foreign Library, from 1849, previously of Park Side, at No. 20 (later renumbered 27) St George's Place. This was set up to supply 'all classes of Readers . . . and at such a Low Subscription as to make it thoroughly a popular Establishment'. The annual fee was one guinea and by the late 1850s some 125,000 volumes were available.
With very nice colour, this unusual book slide is in very good condition.
Serpentine Antiques has dated this piece to the 1890s.
Specialising in unique pieces for the discerning individual, selected and prepared with special care..
You can view the stock and full dealer information on the Serpentine Antiques Profile Page