The barrel with the deceptively simple anthracite stripes is made of cellulose acetate, using a traditional process that‘s extremely work-intensive. For the black, finely turned pieces, high-quality resin was used. The clip and the rings are plated with palladium. The nib is made of 18 carat gold and then completely rhodinized to obtain a silver sheen. Every single writing instrument is mounted by hand and carefully checked to fulfill the strictest quality criteria.