|A rare racing Speed Head mascot by Red-Ashay. This example is mounted on one of their colour-changing mascot bases of the late 1920s. Inside the base there is a cylinder around the bulb which carries four coloured filters: Red, orange, blue and green. |
The shaft on which this cylinder is carried passes through to the front of the mounting base and is attached to a four-bladed propeller. When the vehicle reaches a speed of 20 mph or so, the fan starts to turn and the coloured filters cause the glass mascot to change colour!