Could this be the first model of ballpoint pen to go by the moniker of Parker Duofold? We think it might be. This is a British production from the 1950, after Parker in the United States discontinued the Duofold name. Instead of a clicker such as the famous Parker Jotter of the same era, this pen's whole cap acts as a clicker. Our vintage pen remains in good working order and comes with a working black Parker ballpoint refill. The photo looks great, but there is a fair amount of surface wear on the pen. No cracks or anything exceptionally ugly. 13cm.