Chariot linchpin with a tiger head

Green and brown patina bronze object, possibly a chariot linchpin, in the shape of a tiger's head. The object is viewed at an angle from the side, with the tiger's head facing left. The head has a large eye, two small ears, and a mouth with visible teeth. A long, rectangular piece of metal extends down from the head, with a narrow slit in the center. The background is a gradient of gray, with the object casting a shadow. The style is characteristic of ancient Chinese art.