With the competition due to the gradual spread of the ballpoint pen on the market, the quality of the production, especially in the last years of the company, got much worse, but after the war, the [[Radius]] has continued to produce good quality celluloid pens until the '50s, and the production of this brand is still of great interest collezionistico.{{Infobox_Brand|Radius}} | With the competition due to the gradual spread of the ballpoint pen on the market, the quality of the production, especially in the last years of the company, got much worse, but after the war, the [[Radius]] has continued to produce good quality celluloid pens until the '50s, and the production of this brand is still of great interest collezionistico.{{Infobox_Brand|Radius}} |