Antique Betjemann Book Slide.
Closed: 13 1/2" Long, 6" Wide, 2" Tall.
Open: 6 1/2" Tall.
Open book space: 10 1/2" to 18".
Coromandel wood, polished onyx inserts, brass accoutrements.
Circa 1880s.
Missing a stopper screw on the one side, can easily be replaced.
Some nics to the wood/laquer.
Some patina spots.