Christopher Buck Antiques Ltd. has dated this piece to the 19th Century.
(We can bring it into showroom condition for you if required at a cost of £200 plus VAT).

Uniusually the top of the lower half is also polished, so was obviosly commissioned to possibly be used as two separate pieces. (There are marks where old securing screws have marked this usually unseen surface. also there is a scrape along the left hand side of the lower half, where is has been up against something.
Christopher Buck Antiques Ltd. has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Christopher Buck Antiques Ltd. Profile Page