“The Modern Derrick”
A particularly clever design. You could be forgiven for not even realizing that it is actually a pen.
Drive anyplace where oil is produced and the sight of pumpjacks metronomically bobbing up and down as they pump crude oil will be ubiquitous.
The copper serves to create a pleasant surface to grip, provides good balance due to the rather long barrel and invokes the slightly pink color of the ceramic used for the nozzle. The clip on the cap is an abstraction of the company logo.