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The  [[Tabo]] series of late 30's were produced in different versions depending on the filling systems as there are [[button filler]] models, called [[Tabo Mentis|Mentis]], and depression filler models, similar to the [[Vacumatic]], called [[Tabo Trasparente|Trasparente]], as well as models with the more ordinary [[lever filler]] with a faceted body, similar to the [[Omas Extra]], identified by the number ''1931''. Finally there were also [[safety]] [[Tabo Rientrante|models]], made in ebonite or with metal [[overlay]], very similar to those found in the [[Montegrappa]] production, named with a four digits code number.

The  [[Tabo]] series of late 30's were produced in different versions depending on the filling systems as there are [[button filler]] models, called [[Tabo Mentis|Mentis]], and depression filler models, similar to the [[Vacumatic]], called [[Tabo Trasparente|Trasparente]], as well as models with the more ordinary [[lever filler]] with a faceted body, similar to the [[Omas Extra]], identified by the number ''1931''. Finally there were also [[safety]] [[Tabo Rientrante|models]], made in hard rubber or with metal [[overlay]], very similar to those found in the [[Montegrappa]] production, named with a four digits code number.