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The main technical feature of this pen is its depression filling system, a clear imitation of the [[Vacumatic]] one. The pens were also made with transparent body in order to display the ink level. The cap was screw closed.
The main technical feature of this pen is its depression filling system, a clear imitation of the [[Vacumatic]] one. The pens were also made with transparent body in order to display the ink level. The cap was screw closed.
===Materiali===
===Materials===
Le penne di questa serie vennero realizzate in [[celluloide]], con finiture e fermaglio in metallo laminato in oro, ed il pennino in oro a 14 carati, oppure con finiture in metallo bianco e pennino in acciaio all'iridio (una probabile versione autarchica).
Le penne di questa serie vennero realizzate in [[celluloide]], con finiture e fermaglio in metallo laminato in oro, ed il pennino in oro a 14 carati, oppure con finiture in metallo bianco e pennino in acciaio all'iridio (una probabile versione autarchica).