Modifiche

The activity was quite successful and in [[1924]] the [[Columbus]] trademark was officially recorded at {{Marchio|26261}}<ref>Letizia Jacopini reports on "The history of the fountain in Italy," the number 23247,seen in many pens, which presumably refers to the fact that the mark is registered in Vol. 247, Ranked #23 in the register of trade marks.</ref> at the department of the economy. After this date the pens started reporting an extended imprint (compared to the previous one havin only the ''Columbus'' name) bearing the registration number and the words ''sicurezza garatita''.<ref>meaning ''security guaranteed''.</ref> At the same time the company expanded its production by introducing new versions of gold-plated [[overlay]]s pens.  

The activity was quite successful and in [[1924]] the [[Columbus]] trademark was officially recorded at {{Marchio|26261}}<ref>Letizia Jacopini reports on "The history of the fountain in Italy," the number 23247,seen in many pens, which presumably refers to the fact that the mark is registered in Vol. 247, Ranked #23 in the register of trade marks.</ref> at the department of the economy. After this date the pens started reporting an extended imprint (compared to the previous one havin only the ''Columbus'' name) bearing the registration number and the words ''sicurezza garatita''.<ref>meaning ''security guaranteed''.</ref> At the same time the company expanded its production by introducing new versions of gold-plated [[overlay]]s pens.  

In this period, placed in the first half of '20s, there was also a change of style, passing from the imitation of Germans model to the American ones. The change is shown by some as a consequence of birth, in [[1927]], the new Columbus Eugenio Verga, but there are<ref>on the [http://www.columbuspenne.it/COL/antiche/pagine-ita/origini.htm historic section] on the company site the [[Columbus 670]] is dated to 1924, and there is a commercial letter from 1926 were such models are shown.</ref> clear references to pens with this style produced before the separation of Verga brothers.

In this period, placed in the first half of '20s, there was also a change of style, passing from the imitation of Germans model to the American ones. The change is shown by some as a consequence of birth, in 1927, the new Columbus Eugenio Verga, but there are<ref>on the [http://www.columbuspenne.it/COL/antiche/pagine-ita/origini.htm historic section] on the company site the [[Columbus 670]] is dated to 1924, and there is a commercial letter from 1926 were such models are shown.</ref> clear references to pens with this style produced before the separation of Verga brothers.

In the first half of '20s  the [[Columbus 670]] model, very similar to [[Waterman 42]], was introduced. It was produced in three size, normal, thin, and ladies,  and in black, red or [[mottled]] hard rubber. The range of available [[overlay]]s was also expanded, form the simple engraving machine were added to decorations or bas gallery and this work became one of the strengths of the company. There is a remarkable production of this pen with an engraving of the star of David on the body of the pen (also listed on the packaging) as a result of an agreement between Columbus and the ghetto in Milan.  

In the first half of '20s  the [[Columbus 670]] model, very similar to [[Waterman 42]], was introduced. It was produced in three size, normal, thin, and ladies,  and in black, red or [[mottled]] hard rubber. The range of available [[overlay]]s was also expanded, form the simple engraving machine were added to decorations or bas gallery and this work became one of the strengths of the company. There is a remarkable production of this pen with an engraving of the star of David on the body of the pen (also listed on the packaging) as a result of an agreement between Columbus and the ghetto in Milan.