Thank you for viewing. This is a rotring drafting pen, the Tintenklip. The nib is a Vario Script 0.3mm. A Vario Script set is also included. The barrel is made of green celluloid. There is a crack in the celluloid at the bottom of the barrel, but it is an internal crack and should not affect use (photo 6). Also, because it is an early model, ebonite is used in the top and piston parts, and there is some discoloration (photos 3 and 4). There are also scratches on the plating, so please check the images. There is no stickiness due to hydrolysis. Writing has been confirmed, and it has been cleaned. Images have been updated.