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In [[1948]] it was made what is perhaps the most significant invention in the Italian fountain pen production, the [[Omas 361|361]] model. Born as a response for the success of [[Parker 51]], the originality of the pen is in the central position of the nib, mounted on the axis of the pen, around which is placed an hood open by one side. Depending on the position of use of the pen, and in particular of the open side, the nib can be almost completely covered, resulting in a rigid nib, or left uncovered, allowing a flexible writing. A grading system suddenly very functional, so that it is told that the [[Parker]] tried several times to acquire the patent ({{Cite patent|US|2565667}}) from [[OMAS]].

In [[1948]] it was made what is perhaps the most significant invention in the Italian fountain pen production, the [[Omas 361|361]] model. Born as a response for the success of [[Parker 51]], the originality of the pen is in the central position of the nib, mounted on the axis of the pen, around which is placed an hood open by one side. Depending on the position of use of the pen, and in particular of the open side, the nib can be almost completely covered, resulting in a rigid nib, or left uncovered, allowing a flexible writing. A grading system suddenly very functional, so that it is told that the [[Parker]] tried several times to acquire the patent ({{Cite patent|US|2565667}}) from [[OMAS]].

[[File:Omas-ExtraLucens-BlackVeined-VestPocket-Set-Box.jpg|thumb|Un gruppo di diverse penne di colore grigio]]

[[File:Omas-ExtraLucens-BlackVeined-VestPocket-Set-Box.jpg|thumb|A group of gray [[Omas]] pens]]

The introduction of [[Omas 361|361]] led to a series of novelty even on the stylistic side other than in the technical one. For its production were used the new ogival shapes, and also cap decoration passed to a single band, and the [[piston filler]] was adopted, which was used for all the production except the [[Extra Lucens]] who stayed with the ''"[[stantuffo tuffante]]"'', the arrow clip and the three rings on the cap, remaining in production, without double color nibs, in all black and in medium and large sizes for all the '50s.  

The introduction of [[Omas 361|361]] led to a series of novelty even on the stylistic side other than in the technical one. For its production were used the new ogival shapes, and also cap decoration passed to a single band, and the [[piston filler]] was adopted, which was used for all the production except the [[Extra Lucens]] who stayed with the ''"[[stantuffo tuffante]]"'', the arrow clip and the three rings on the cap, remaining in production, without double color nibs, in all black and in medium and large sizes for all the '50s.