1999 P Dime--Teacup Handle Nose.

I found a dime at work today. I am a cashier at a Family Dollar, so I find a lot of interesting coins this way. But back on topic, it is a 1999 p dime with what looks like a teacup handle going from where the nose should be to the forehead.

From observation, there is no other corruption to the coin except on the top right corner. No proof of tooling and the condition is otherwise decent with a little detail still in the hair. Possible evidence of tooling on reverse, but unsure.

Possible undiscovered mint error?