After World War II the company faced an increased competition by the impact of the molded plastic introduction in fountain pens production, whose circulation was rapidly increasing in Europe. All series were reviewed by using the [[piston filler]], then was introduced the [[Vertex]] line, a covered nib pen (later replaced by [[Tabo V]]) and the two lines [[Tabo S|S]] and [[Tabo CO|CO]] to indicate respectively the models with hooded nib and the models with metal cap, (CO is the acronym of ''Cappuccio Oro'', meaning ''gold cap'').<noinclude> | After World War II the company faced an increased competition by the impact of the molded plastic introduction in fountain pens production, whose circulation was rapidly increasing in Europe. All series were reviewed by using the [[piston filler]], then was introduced the [[Vertex]] line, a covered nib pen (later replaced by [[Tabo V]]) and the two lines [[Tabo S|S]] and [[Tabo CO|CO]] to indicate respectively the models with hooded nib and the models with metal cap, (CO is the acronym of ''Cappuccio Oro'', meaning ''gold cap'').<noinclude> |