Dickinsons Antiques has dated this piece to the 16th Century.
Originally used to store valuable items in a wealthy Welsh manor house.

The innovative construction method is associated with the upper Usk and Wye valleys in the counties of Breconshire and Radnorshire.
For a similar example and further reading please see. "Welsh Furniture 1250 ~1500" by Richard Bebb. Volume one page 146.
A wonderful and substantial example of a Welsh Tudor Chest.
Dickinsons Antiques has dated this piece to the 16th Century.
Dealing in early oak and country furniture since 1958.
You can view the stock and full dealer information on the Dickinsons Antiques Profile Page