From the introduction of plastics in fountain pens beginning
with the Le Boeuf, this material has played a key part in the
look and function. In the case of the M620, it has been the
entire difference between the models. And what a difference
it has been.
The M620 first known as the "Cities Series", evoking
major centers of world population including Athens,
Berlin, and San
Francisco, has evolved to include "the world's most
famous sites", the most recent of which is the Grande Place
in Brussels. This pen celebrates the ascendancy of democracy
over monarchy. The area was beautifully restored to its renaissance
glory by the professional guilds after it was destroyed by Louis
XIV.
Cast plastics have made the finest pens since Dupont provided
the first materials to Le Boeuf and Sheaffer's in the early
1920's. Although the material is no longer nitrocellulose, rather
a more complex and durable resin, the principles of manufacture
are still much the same. A liquid plastic is cast into a rod
or sheet, which is then hardened. It is machined and milled
into the form of a barrel and a cap. If the material has more
than one color and reflectivity, these properties are revealed
when the pen is cut from its solid form.