Plaque in the shape of a horse-drawn chariot

Greenish metal plaque in the shape of a chariot with two horses. The plaque shows a chariot with two wheels and a rectangular object underneath where the axle meets. Two horses are depicted side-by-side, each with their front legs raised. The horses appear to be galloping. The chariot and horses are made from a single piece of metal. The plaque is green with some areas of gold and brown showing through the green patina. The plaque takes up most of the frame. The background is grey.