There are like a ton of different editions of the Fisher Space Pen. It comes in different colors, and there are even some special editions like the Apollo 11 50th anniversary edition. Also, cartridges are available in lots of different colors: blue, black, red, green, burgundy, purple, brown, and silver. And almost each of the colors is available in a fine, medium or bold cartridge. One thing I wasn’t aware of that when I ordered my first Fisher Space Pen…