In 1985, Pelikan expanded its fountain pen lines. One of these was the M100, which was the least expensive entry level model. At first, only black version was introduced, and other color versions were added later. M100 was the same size as M150, and had a single cap ring, steel nib and piston filler mechanism. The only difference was that the trim and nib was silver colored, but only white version had the black trim and black nib⁽¹.²⁾.

M100 was discontinued in 1997.

Note;⁽¹⁾The reason why only the white version had this color scheme is unclear, but it reminds me of Lamy Safari, which was launched in 1980 and gained popularity.
⁽²⁾"Pelikan stopped manufacturing the white Pelikan M100 in 1993.""Pelikan M100 White has been called the Stormtrooper by its fans due to its colors which strongly resemble the outfit of a Stormtrooper."(Fountain Pen Network).