This was in a bulk lot of late 19th to mid 20th century world coins and I'm not sure what to make of it.
It has a brassy feel and appearance to it. I'm not sure if this was once a coin which got hammered and cracked or if it's some sort of hammered coin with a planchet crack. It could also be a piece of industrial trash, but having once walked away from a $5 blacksmith before knowing what they were, I'm no longer quick to judge

3.63g
Approx. 0.050" (1.27mm) Thick (variable)
0.903" (22.94mm) to 0.931" (23.65mm) Diameter (variable)

