B66-758 BILL POSTER HAMMER. Robertson Patent. Patented in 1902 by Arthur Robertson of Somerville, MA, and described simply as a magnetic tack hammer, these were marketed as being particularly well suited for posting handbills in hard to reach locations. Typically sold in multiple parts that could be screwed together, this is an example of the one-part version, 24" long, which is the least common. In nice clean condition, has both of its original marked clips, a little light surface oxidation but otherwise near mint. For the four part version, see Lot 383. From the collection of David Jeffers. Fine 100-200