Quiet Street Antiques of Bath has dated this piece to the 1870s.
It opens to reveal a beautifully fitted satinwood-lined interior, with the original gilded velvet writing surface (a little wear to the fold); fine pair of gilt brass topped ink bottles and various compartments for stationery.

Unusually for this model, there is a bank of three secret drawers, and it is complete with its original gilded Bramah lock and key. **This is almost certainly a box by Betjemann. Measurements:15.5 x 10.75 x 5 inches (39.5 x 27 x 12.75cms)
Quiet Street Antiques of Bath has dated this piece to the 1870s.
Fine antiques at sensible prices
You can view the stock and full dealer information on the Quiet Street Antiques of Bath Profile Page