This green coffee mug is one in a much larger set of dishes in the "Kon-Tiki" line by Palissy Royal Worcester. The design features a stylized pattern of shields and spears. There were lots of different pieces: coffee and tea pots, plates, creamers, cake stands, pin dishes, mugs, cups, saucers, etc. There is also an identical set but in pinkish brown (taupe). Probably made in the 1950s, after the Kon-Tiki craze hit the popular consciousness. The saucer that accompanies the mug measures 12.5 cm/5" across.