An unusual dental key with an ingenious handle mechanism. Pressure on the metal lever over the handle causes the clasp to rotate the hinged claw against the bolster.
This allows the clasp to secure the root of the tooth without needing to rotate the tooth key. The handle is elevated by a steel spring which keeps the clasp extended in the resting position. The handle is made from rosewood and has an ivory inset on one side for orientation. Unsigned but high build quality and an extremely rare dental instrument, of French origin.