Hammerton?s Billet Knife. London: George Hammerton, ca. 1960. Bakelite knife allows the magician to discern the contents of a sealed letter. Accompanied by an un-gimmicked duplicate, and instructions. This item is being offered by Bob Swadling from his personal collection. All proceeds from the sale of this lot, including buyer?s premiums, will be directed to a fund set up in benefit of Sebastian Midtvaage for the costs of his cancer treatment and healthcare.