This is an extremely rare Roller Ball pen from ACME. This is a tooling test for not only a brand new shape for a collection to be named ATP (Aluminum Tube Pen), but also anodized color into the aluminum body of the pen. On top of that, we also experimented with different etching patterns. This pen has a red cap and yellow barrel with a matte finish and a criss-cross knurled pattern etched into the pen. These prototypes are extremely rare, only a few will be for sale. After they're sold, no more will ever be available.