Modifiche

From this period there also the pens marked [[Plevonia]], which are the most valuable production of the company. These pens were made in ringed transparent cellulois, as a clear imitation of [[Vacumatic]], from which they also copied the filling system. Were produced in two versions (with three rings or with a band and two rings), but in one size. They were equipped with gold nib marked ''Plevonia'' and ''585''.

From this period there also the pens marked [[Plevonia]], which are the most valuable production of the company. These pens were made in ringed transparent cellulois, as a clear imitation of [[Vacumatic]], from which they also copied the filling system.<ref>they have inscripted the patent {{Cite patent|IT|329230}}.</ref> Were produced in two versions (with three rings or with a band and two rings), but in one size. They were equipped with gold nib marked ''Plevonia'' and ''585''.