Cambrian Table Waters Royal Doulton Pub Jug Ruthin North Wales

A very rare pub jug for Cambrian table waters of Ruthin. The jug is in a very unusual shape for a Royal Doulton made jug and has a striking cobalt blue top. This jug was originally dug up from a rubbish tip and had its handle inside as it was broken. This has not been expertly restored and is invisible to the eye. Height 5.5 inches. Only known example?