KENT brand drawing pens (three types of crow quill pens). Crow quill pens, tools for drawing lines of the same width, were once essential for blueprints, nautical charts, maps, and manga production. Uchida Drawing Instruments, which manufactures and sells KENT crow quill pens, still seems to be making precise crow quill pens. The current new retail price is from 10,000 to several hundred yen! (The head is in the style of a giboshi) is a rare antique. Although unused, there is some aging on the handle, but the pen nibs are clean. Both are usable. Analog has a good taste. Still useful for work and hobbies. Items...Rulers/Drafting supplies Thank you.