Vintage Ivory Tooth Carved Figure??

Hi there I'm not sure if this is the genuine thing or not. I think it's an Ivory figure made out of a tooth not sure what type but it measures 4in tall and 2in wide. Looks to have correct Patina and is baby smooth and heavy for size. Also looks to have been initailed at the bottom. Just curious what others think original or fake or details about the piece in general.