An antique armoire will most likely be made using a blend of wood. The cheapest types of wood were used for the back and the bases. The front and the frame were made using oak before the 16th century while Mahogany and Walnut became more common after the 17th Century.
Reproductions, on the other hand, will be made from a single type of wood. Solid wood armoires will be pricier whereas MDF will be cheaper.