The new M4RAW Brass Cap-O-Matic Space Pen features a stylishly rustic appearance, and will develop its own patina pattern over time through use, making yours more and more unique to you as time goes on.
Containing a Fisher Space Pen® Pressurized Ink Refill Cartridge, the M4RAW will write upside down - at any angle, under water, through grease, in extreme temperatures (-30 to +250 degrees F), on almost any surface, three times longer than the average pen, and of course in the gravity free vacuum of space, and all are lifetime guaranteed for quality against all manufacturing defects - American Technology
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.
Any engraving will appear very subtle.