I'm showing today two sterling mechanical pencils produced in the form of bugle musical instruments. Both circa 1880. Both deploy the writing tip by turning the mouthpiece clockwise and then after use counterclockwise. The pencil pictured on top was produced in Birmingham, England. The maker name is washed out. The lower piece was made in London, England by the firm of Swaine & Adeney. Each is approximately 3 3/4 inches long closed and 4 1/2 inches long extended.