Bronze bo bell, China, Shaanxi, Eastern Zhou, 5th Century BC
Mueso Arte Orientale Torino
This bronze bell is known as a bo. It has a handle in the shape of two dragons. It is played with a hammer and plays two different notes depending on where it is struck.
More at BBC
Probably this is the component of a Bianzhong (simplified Chinese: 编钟; traditional Chinese: 編鐘), an ancient Chinese musical instrument consisting of a set of bronze bells. Below the Bianzhong of the Marquis Yi of Zeng.
Thanks Spiritia, Wikipedia