Fisher Space Pen B4 Shuttle Space Pen, space pen
The Fisher Space Pen B4 Shuttle Space Pen is the same pen as the Fisher CH4 but with a black grid engraved into the exterior. Sometimes known as the "Fisher Grid Pen" or more officially as the "Black Grid
Office Products Fisher Space Pen Co Space Pen Grid Design Shuttle Space Pen Original Astronaut Pen Writing Pens
Source: viewngr.com