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The classification of [[Conway Stewart]] models is extremely complex, although since the '20s  the company started using names, all the pens were still identified by a number and sometimes only by that. In the '20s  the top model (which will remain so for two decades) was the [[Duro]], a large pen, then there was the small and functional [[Dinkie]], and the economic [[Universal]]. Other models made in the same period were the [[Pixie]] and the [[Dandie]].

The classification of [[Conway Stewart]] models is extremely complex, although since the '20s  the company started using names, all the pens were still identified by a number and sometimes only by that. In the '20s  the top model (which will remain so for two decades) was the [[Duro]], a large pen, then there was the small and functional [[Dinkie]], and the economic [[Conway Stewart Universal|Universal]]. Other models made in the same period were the [[Pixie]] and the [[Dandie]].