NOTE: This pen casing is RAW UNFINISHED BRASS. Over time each pen will develop a unique patina as it responds to the environment, owner's body chemistry, and the way he or she handles their pen. It can always be polished to restore its original look. When closed, the Bullet Space Pen is the perfect size to carry in your wallet, pocket, purse, car glove box, organizer or toolbox. When opened it's a full sized, evenly balanced writing instrument. The original Bullet Space Pen was conceived in July of 1948 by Paul Fisher, who was soon machining a new pen design shaped from solid aluminum. This became our first Fisher ball point pen, and arguably the most popular pen of the twentieth century. This pen is now composed of all brass with a chrome finish.