Interesting, yes? This novelty mechanical pencil, in the form of a bull, was created by Alfred Clark, a London based silversmith (AC), ca.1910. It was marked "'Clark, 33 New Bond St." as well as with the necessary hallmarks. The pencil was attached to the bull's head an it rested within the animal's torso when not in use.
Have one for sale? Please email me at Antikey.Chop@gmail.com