The image shows an antique door knocker in a glass case. The knocker is made of metal and has a round ring attached to it. The ring is green in color and appears to be old and weathered. On top of the ring, there is a decorative design with intricate patterns and swirls. The design is in the shape of a bird with its wings spread wide and its head facing upwards. The bird is surrounded by a floral pattern. The background of the image is orange, and the glass case is transparent, allowing the knocker to be seen through it.