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Vintage - 3 & 3/16 Inch Cannonball ? , 4 pounds 12 ounces :
$51.00
Vintage - 3 & 3/16 Inch or 81mm Cannonball , 4 pounds 12 ounces . Has been painted black at some pointnot sure of the age or origin. Has pitting but measures fairly even at different points. I bought this at an sale in northeast Missouri probably 25 years ago.