The Octagon is an example of geometric perfection that has long provided Montegrappa with a timeless motif that also provides its own unique feel and level of comfort. Made from celluloid, a natural material. The Extra Otto is offered as a fountain pen and rollerball in three exceptional new color patterns: malachite green, shiny lines with shiny gray-toned stripes, and the metallic look of black and white Zebra. All Extra Otto fountain pens are complemented by an 18k gold nib. The decoration on all Extra Otto models is made of sterling silver and Montegrappa octagonal motif is engraved on the top. Only 888 fountain pens and 888 rollerballs are available as a limited edition.