Modifiche

In the second half of the '30s were then introduced [[Olo F]] and [[Olo Gamma]] models, the first was a faceted pen, going back to the similar [[Novum]] model. The second was a pen with straightest lines, with a metal cover bottom. Both were offered with combination of mechanical pencils.

In the second half of the '30s were then introduced the [[Olo F]] and [[Olo Gamma]] models, the first was a faceted pen, going back to the similar [[Novum]] model. The second was a pen with straightest lines, with a metal cover bottom. Both were offered with combination of mechanical pencils.