Gravity pencil by Alfred Havilah Woodward (Birmingham) from 1887. Woodward filed patents for this pencil in both the U.K. and the U.S. – patent #’s 5224 & 296,302, respectively. An ad from the Illustrated London News (1888) showing this exact design.
"Woodward's". "A.H.W.". hallmarks for Birmingham, 1887