Cuspids on the sides!  LEFT ANGLED, Megalodon SHARK TOOTH. 2 million years old - with pointed "cuspids", visible on each side.  Please see attached photos for exact dimensions (as compared to a US Dime). 

Megalodons existed 2 million years ago and their teeth are only found DEEP in the Ocean.  Discovered by Connecticut Scuba Divers, in the Atlantic Ocean, off the "Shark Tooth Ledge" near the North Carolina Coast (30 miles from shore, 110 feet underwater).  This item is available for shipping nationwide to Winning Bidder (with additional insurance, given the age and value) or can be picked up for FREE in Enfield, Connecticut after the Auction.  Donated to H2O Planet by Enfield Scuba Divers.  (This is a LEFT-ANGLED Tooth (as seen in the photos).  For those who loves Sharks, there is also a match (with a right angle) also offered in this Auction, too.)