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.
- they have inscripted the patent nº IT-329230.