Acme rollerball pen. The colored finish on the acne writing tool is hand done using the finest lacquer available. Rollerball pens are different than ballpoint each has its good points rollerball results are much finer as the ink simply flows similar to a fountain pen. All roller balls can easily change into a fountain pen with an acme fountain pen conversion kit. Nancy wolf “dogs” signature design and illustrations have been featured on fabric, apparel, home furnishings, stationary, table ware, packaging products. She has been a featured artist at contemporary textile design shows at the Cooper Hewitt museum in New York she lives and works in New York City.