The Conklin® Mark Twain Crescent Stealth Deluxe Carbon Fiber™ Fountain Pen is an exact replica of the original Conklin crescent filler used and promoted by Mark Twain. In 1903, Mark Twain, the legendary American author, began his relationship with The Conklin® Pen Co, the great American pen manufacturer. As a spokesman for Conklin, Twain advertised and promoted the famous Conklin crescent filler. Each pen features Mark Twain’s famous signature on the band.