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[[Image:1915-12-Onoto-2.jpg|thumb|[[Onoto]] advertisement from 1915]]

[[Image:1915-12-Onoto-2.jpg|thumb|[[Onoto]] advertisement from 1915]]

In those years however production continued without significant changes, the company had in fact a functional and efficient fountain pen, and saw no reason to make changes. However [[mottled|marbled hard rubber]] was introduced (1913?). In a [[1913]] catalog are  cited the  ''Hermit'' (a [[safety]]) and ''Pentago'' models, where the [[Valvless]] model is in [[1915]]. The ''[[overfeed]]'' nib  was replaced by an ordinary nib in [[1921]], when it was also introduced the [[InkPencil]], a [[plunger filler]] stylographic model.

In those years however production continued without significant changes, the company had in fact a functional and efficient fountain pen, and saw no reason to make changes. However [[mottled|marbled hard rubber]] was introduced (1913?). In a 1913 catalog are  cited the  ''Hermit'' (a [[safety]]) and ''Pentago'' models, where the [[Valvless]] model is in 1915. The ''[[overfeed]]'' nib  was replaced by an ordinary nib in 1921, when it was also introduced the [[Ink Pencil]], a [[plunger filler]] stylographic model.

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