An antique treen searce, late 18th/early 19th century, still retaining its metal perforated sheet for sieving. It unscrews to retrieve the powder. There is an excellent old repair to the bowl, good colour and patina. Note the nicely shaped rim.
Searce means to sift, these items were made and used to sift powder, mainly in apothecaries, before making it into a paste for pills.
An antique treen searce consists of a semi circular bowl to the top this should have a metal perforated sheet in its central lower section which will let the sieved powder to pass through to the base. The base is hollow it unscrews and the powder can be retrieved.