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In [[1942]], during a bombing, the factory in Milan on Via Lamarmora was almost completely destroyed,<ref>this is also why there are strong uncertainties on many dates, because all the archives were lost in that occasion.</ref>, and the production was moved to Lesa, on the shores of Maggiore Lake, with considerable logistical difficulties since the plants were in four different sheds, quite distant from each other. In this period the company merely continued a limited production of existing models without any change or innovation and only in [[1946]], when the company was able to return to Milan, the production was resumed at full capacity.

In [[1942]], during a bombing, the factory in Milan on Via Lamarmora was almost completely destroyed,<ref>this is also why there are strong uncertainties on many dates, because all the archives were lost in that occasion.</ref>, and the production was moved to Lesa, on the shores of Maggiore Lake, with considerable logistical difficulties since the plants were in four different sheds, quite distant from each other. In this period the company merely continued a limited production of existing models without any change or innovation and only in [[1946]], when the company was able to return to Milan, the production was resumed at full capacity.

[[File:Columbus-Extra-134-Red-Open.jpg|thumb|left|A [[Columbus 13x|Columbus 134]]]]

[[File:Columbus-134-Red-Open.jpg|thumb|left|A [[Columbus 13x|Columbus 134]]]]

In the middle of '40s [[Columbus]] introduces the [[Columbus 13x|134]] model, a big [[lever filler]] pen that was a clear imitation of the [[Eversharp]] [[Skyline]]. The same model was also produced in the [[Columbus 13x|132]] medium size version and in the [[Columbus 13x|130]] small version, for ladies. Again in the '40s a [[piston filler]] model, the [[Columbus 40|40]], was also produced and the [[Columbus 55|55]] had a restyling, becoming a whole line of pens.

In the middle of '40s [[Columbus]] introduces the [[Columbus 13x|134]] model, a big [[lever filler]] pen that was a clear imitation of the [[Eversharp]] [[Skyline]]. The same model was also produced in the [[Columbus 13x|132]] medium size version and in the [[Columbus 13x|130]] small version, for ladies. Again in the '40s a [[piston filler]] model, the [[Columbus 40|40]], was also produced and the [[Columbus 55|55]] had a restyling, becoming a whole line of pens.