Totally stumped...

[CityDigger]

This thing looks like a modern day bell but it appears to be filled with metal. Clearly doesn't appear to be too old but curiosity is killing me. Found in Williamsburg, so I never assume something is nothing here.

 

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[Broken knee]

It's a bell. HH pick at it it may just be crud inside? It may be from someones pet?
BK

 

[Roger Mn.]

It looks like a plastic knob off a kids toy. China