Here's a new one to me, the Signet, sold by the Rexall Stores but made by DeWitt-LaFrance of Cambridge, Massachusetts. Although plain, it works perfectly with 1.1 mm lead. It is a 5 & 3/8 inch all-metal twist pencil, marked nickel silver. "Silver" is an honorary title since the metal alloy is usually 60% brass, 20% nickel, and 20% zinc. The dings and dents are no doubt from a rough and tumble life in the pencil box where I found it.
The pencil was in a German-made wooden pencil box owned by a young scholar living and attending school in Buck Creek, Iowa, in Bremer County in 1923. Later that young man became the father of my father-in-law. His box was kept intact all these years.