Royal Doulton Trial Colourway/Prototype Jug The Elephant Trainer. Im downsizing part of my colourway jugs collection. The item “Royal Doulton Trial Colourway/Prototype Jug The Elephant Trainer” is in sale since Sunday, December 5, 2021. This item is in the category “Arte e antiquariato\Porcellana e ceramica\Altro porcellana e ceramica”. The seller is “franzuc-43″ and is located in San Lazzaro. This item can be shipped worldwide.