Button, maybe for a Horse Tack

The Metropolitan Museum of Art

The image shows a dark metallic button with a domed top. The button is circular and made of metal that appears to be darkened, likely due to oxidation or rust. The surface of the button is pitted and rough. The button is centered on a plain off-white background. The lighting highlights the texture and details of the button. A shadow is cast below and to the right of the button. The title of the image is "Button, maybe for a Horse Tack".