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The [[Radius]] initial production was divided in two lines: the [[Radius Superior|Superior]] for the more valuable high-end pens and more valuable, and the  [[Radius Extra|Extra]] for second tier pens sold at lower prices. The [[Radius Superior|Superior]] line remained in production, with different stylistic and technical changes, including the implementation of [[Radius Superior Trasparente|Trasparente]] version, until the '50s, while the [[Radius Extra|Extra]] line was decommissioned in the late '40s, replaced by other economic production, such as the [[Comet]] and the [[Radius 31]], [[hooded nib]] models of much lower quality than its predecessors.

The [[Radius]] initial production was divided in two lines: the [[Radius Superior|Superior]] for the more valuable high-end pens and more valuable, and the  [[Radius Extra|Extra]] for second tier pens sold at lower prices. The [[Radius Superior|Superior]] line remained in production, with different stylistic and technical changes, including the implementation of [[Radius Superior Trasparente|Trasparente]] version, until the '50s, while the [[Radius Extra|Extra]] line was decommissioned in the late '40s, replaced by other economic production, such as the [[Comet]] and the [[Radius 31]], [[hooded nib]] models of much lower quality than its predecessors.

In the '50s in fact (at least so it appears in [[:Category:Catalogo-Tentardini-195x|this catalog]]) the [[Radius Superior|Superior]] line, which in the meantime had taken on ogival lines following the stylistic trends of the period, was flanked by cheaper models such as the [[Comet]] (with a winged nib very similar to that of the [[Montblanc 25x]]) and the [[Radius 31]], a model with [[hooded nib]] of much lower quality than its predecessors. In the same catalog we note the presence of an additional model, the [[Fortune 38]], a clear imitation of the [[Pelikan 400]].

In the '50s in fact (at least so it appears in [[:Category:Catalogo-Tentardini-195x|this catalog]]) the [[Radius Superior|Superior]] line, which in the meantime had taken on ogival lines following the stylistic trends of the period, was flanked by cheaper models such as the [[Comet]] (with a winged nib very similar to that of the [[Montblanc 25x]]) and the [[Radius 31]], a model with [[hooded nib]] of much lower quality than its predecessors. In the same catalog we note the presence of an additional model, the [[Fortune 38]], a clear imitation of the [[Pelikan 400]].

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