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). Are also known to exists, but to be very rare, some metal [[overlay]] pens.

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.