Modifiche

The success of the [[Duofold]], despite its price (10 dollars) was high for the time, continued for over a decade in which the models were revised several times, adjusting the production to the introduction of new materials such as celluloid or the new ''[[Streamlined]]'' style with tapered models. In 1923 was opened a plant in Canada, and was introduced a [[Duofold|Lady Duofold]] model for women. In 1926 also the [[Parker]] began to move production from ebonite to celluloid.

The success of the [[Duofold]], despite its price (10 dollars) was high for the time, continued for over a decade in which the models were revised several times, adjusting the production to the introduction of new materials such as celluloid or the new ''[[Streamlined]]'' style with tapered models. In 1923 was opened a plant in Canada, and was introduced a [[Duofold|Lady Duofold]] model for women. In 1926 also the [[Parker]] began to move production from hard rubber to celluloid.