Modifiche

With the progress of World War II came also a shortage of raw materials, particularly for gold nib, and like most of the European companies [[OMAS]] had to resort to some steel alloy. The one used by [[OMAS]] was called ''[[Permanio]]'', and was advertised as having a better durability even when compared to gold. But this alloy proved to be one of the most susceptible to corrosion, and today  ''[[Permanio]]'' nibs are very rare and have a much higher value of their analogues in gold.  

With the progress of World War II came also a shortage of raw materials, particularly for gold nib, and like most of the European companies [[OMAS]] had to resort to some steel alloy. The one used by [[OMAS]] was called ''[[Permanio]]'', and was advertised as having a better durability even when compared to gold. But this alloy proved to be one of the most susceptible to corrosion, and today  ''[[Permanio]]'' nibs are very rare and have a much higher value of their analogues in gold.  

Nel dopoguerra la produzione riprese con nuove penne di forma ogivale, ed il passaggio al [[caricamento a stantuffo]]. Nel 1946 la linea [[Omas Extra|Extra]] venne completamente ristilizzata, venne mantenuta la clip a rotellina ma vennero usate tre verette sul cappuccio, inoltre venne adottato il [[caricamento a stantuffo]] e venne introdotta una sezione trasparente per la visualizzazione del livello di inchiostro. Vennero mantenute tre misure, piccola, media e grande, identificate rispettivamente coi numeri [[Omas 55x|555]], [[Omas 55x|556]] e [[Omas 55x|557]].  

After the war [[OMAS]] resumed production with a change of style, producing pens with a new ogival shape, and adopting the [[piston filler]]. In 1946 the [[Omas Extra|Extra]] line was completely restyled, the wheel clip was maintained, but were used three ring on the cap as decoration, and the filling system was changed to  [[piston filler]], with a transparent section for ink level display. They were produced in three sizes, small, medium and large, identified respectively by the numbers [[Omas 55x|555]], [[Omas 55x|556]] and [[Omas 55x|557]].  

[[Image:1959-Omas-361.jpg|left|thumb|200px|Pubblicità di una [[Omas 361|361]] ]]

[[Image:1959-Omas-361.jpg|left|thumb|200px|Pubblicità di una [[Omas 361|361]] ]]