Modifiche

In addition to black hard rubber [[Dunn]] produced also [[bakelite]] pens with a transparent barrel (though most of the transparent models were later made in [[celluloid]]) boasting (rightly) of being the only transparent pen (with the model named [[Camel Tatler]]) to display the ink level, and a good 10 years before the [[Vacumatic]]. Are also known to exists, but to be very rare, some metal [[overlay]] pens.

In addition to black [[hard rubber]], Dunn produced pens with transparent barrel; these were initially made in [[bakelite]] and later in [[celluloid]]. This feature allowed it to boast (rightly) to be the only transparent pen (in the ads showing the model called [[Camel Tatler]]) to display the ink level, and this well 10 years before the [[Vacumatic]]. Are also known to exists, but to be very rare, some metal [[overlay]] pens.