This is an authentic antique stoneware bed warmer, also known as a "hot water pig." It features a classic Victorian-style two-tone glaze, with a cream-colored body and a rich, salt-glazed brown shoulder and decorative knob. This piece includes its original screw-top stopper and showcases a clear impressed maker's mark on the base from Fossils Pottery, Glasgow. Measuring 31.5cm (l) x 15.5cm (h), it is a sturdy and well-preserved example of traditional Scottish pottery.