Space Pen by "Fisher" CH 4 - Astronaut US Ballpoint Pen - Chrome Plated

Description

When astronauts started to explore the reaches of outer space
Paul Fisher realized that no existing pen could perform
in its zero-gravity vacuum and temperature extremes.
After rigorous testing NASA selected the Fisher Space Pen for use on all of the Apollo missions.
They are still used on manned space flights.
The Fisher CH 4 Pen is made of all steel and brass components.
The ink is a pressurized with nitrogen
and becomes liquid when the special ball point exposes the gel to air.
This means your pen won't dry out.
The estimated shelf life of the special ink is 100 years.
The Fisher CH 4 pen is exactly the same model that has been used on
all space flights since Apollo VII in 1968's.
You probably won't be using this pen in the same extremes as the astronauts
but it's nice to know that you have a pen that will work for you regardless of the conditions you face.
And this sturdy design will last through years of heavy use.
Fisher Space Pen - Astronaut - CH 4 Original Ballpoint - Chrome Plated Features:
Finish: All Steel and Brass Components;
Clip: Chrome Plated;
Trim: Chrome Trim;
Retractable Side Release Button;
Cartridge: Fisher Pressurized PR4, Black Ink, Medium Point;
Includes a PR4 Black Ink Medium Point Refill;
Original Gift Boxed /
which is unfortunately damaged
/.
Cap Slides On & Off;
Brushed Chrome with Clip;
Length: Open - 5.25", Closed - 3.75".
The  pen is in Very Good  Overall condition.
UNUSED!
Fully functional!
NB!
The box is
unfortunately
damaged!
Photos are an integral part of the description.
Rare item and a great addition for your pens collection!
On Apr-19-14 at 08:22:02 PDT, seller added the following information:
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