Modifiche

In the '40s the production was revised, and a new jagged clip was used, not present on [[Aurora]] marked models, but used by the company in other economic production. Moreover, with the introduction in 1938 of ''[[Platiridio]]'' nibs, also [[Olo]] pens were mounted with steel or gold plated steel nibs, marked ''OLO'', which were imprinted in addition to the squared ellipsoid logo also with the production year.

In the '40s the production was revised, and a new jagged clip was used, not present on [[Aurora]] marked models, but used by the company in other economic production. Moreover, with the introduction in 1938 of ''[[Platiridio]]'' nibs, also ''Olo'' pens were mounted with steel or gold plated steel nibs, marked ''OLO'', which were imprinted in addition to the squared ellipsoid logo also with the production year.