Nice one, Shaun!

WM, what you have is an engraved crest.
A coat-of-arms also contains the shield bearing the arms.
The crest originally sat on top of a helm or helmet.
The correct heraldry term for what you have is a Griffin's (or gryphon) head couped.
Couped meaning cut; it was "torn" it would be erased.
A griffin/gryphon has the head of an eagle, but with the ears of a lion.
If it was a dragon's head, there would be a prominent tongue.