The Fisher Space Pen was originally developed for the US Space Program as a purely entrepreneurial effort by Paul C. Fisher. He invented the pressurized ink cartridge pen, which operates in harsh environments ranging from the weightlessness of space to underwater. These pens went to the moon with the Apollo Astronauts and are still used in both the US and Russian space programs to this day.
While these pens are great writing instruments for everyday use, there are people who collect them for their historical value. They are often sold in collector packaging by themselves or with other products. Commemorative sets are also available. Here are some examples.
article continued below…
The main technical innovation of the Fisher Space Pen is that is uses an special, almost solid, ink called thixotropic that is loaded into a 35 psi nitrogen pressurized seal cartridge. This feature is what allows the pen to write under conditions where ordinary ball point pens would fail.
Popular Fisher Space Pen collectors sets include space themes and camping sets, such as those combined with Victorinox Swiss Army Knife sets. There is even a Barbie collector set with a pink colored pen. You will usually find them paired with higher end collectibles in these sets.
The Fisher Space Pen isn’t a cheap throw away pen but a great writing instrument that should last for years.