Originally released in 1998, the M300 is the smallest of the Souverän line yet still retains the high quality construction and brass piston unit of its larger siblings. The two-tone 14C-585 gold nib is available in fine, medium, or broad widths and can easily be unscrewed like on all Souverän pens. However, due to its small size the M300 nib does not swap between any other models.