Kaweco Classic Sport - Guilloche
The Kaweco Classic Sport is a pocket-sized fountain pen that transforms into a full-sized pen when cap is posted . When capped (4.1 inches long) but very comfortable when posted (5.2 inches long). This fountain pen comes with a glod-plated steel nib and iridium tip for ink cartridges.
Guilloché (or guilloche) is a decorative technique in which a very precise, intricate and repetitive pattern is mechanically engravedinto an underlying material via engine turning, which uses a machine of the same name, also called a rose engine lathe. This mechanical technique improved on more time-consuming designs achieved by hand and allowed for greater delicacy, precision, and closeness of line, as well as greater speed. - Wikipedia