Externally-Mounted Oscillating Display Apparatus And Methods Of Use Thereof

The invention includes a novel oscillating display device, system, and assembly configured to be mounted to an external surface and allow dynamic oscillation movement of a personalized display in response to an external force, such as air flow generated by the movement of a vehicle, while maintaining the display in an approximately horizontal position relative to an external viewer. The oscillating display of the invention may further include one or more marketing messages or advertisements to be displayed to a viewer.