Ingenious 1920s pocket roulette wheel made to resemble a fob watch, with spring driven single hand on an enamelled dial in white black and red showing numbers 1-36 plus single zero; a pocket roulette game in a steel watch casing with original leather slip case. To operate it, first wind it up with the crown. Then when you press the crown the hand spins round at speed. When you let go of the crown the hand will randomly stop. Such portable gambling devices were popular with wealthy gamblers in Europe in the early twentieth century.