This is a vintage illustration of a coral specimen. The coral is a large, branching structure with a rough, textured surface. It's a muted green-grey color, and the branches are densely packed together. The coral is resting on a rectangular base that is a reddish-brown color. The base has a pattern of small, circular spots on it. To the right of the main coral structure, there's a smaller, rounded piece of coral, also with a textured surface. The illustration is detailed and appears to be from a scientific or botanical publication, as indicated by the number '290' in the upper right corner and the publisher's information at the bottom: 'Dec. 1808. Publish'd. by J. Sowerby, London.' The overall style is reminiscent of early 19th-century natural history illustrations.