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The '30s were a period of great activity for [[Montegrappa]], which in addition to creating its own models, became a major production company for others brands, building pens for a wide variety of companies, more or less known. Among these Letizia Iacopini, in the book ''La storia della stilografica in Italia'', reports: ''a.b.c.'', ''Aquila'', ''Astoria'', ''[[Atlantica]]'', ''[[Caesar]]'', ''[[Contessa]]'', ''Dacis AVR'', ''[[Domino]]'', ''[[Duchessa]]'', ''Montenero'', ''Pilus'', ''Titanus'', ''Vulcan-Saturnia'', ''[[Zenith]]''. Excepted ''[[Domino]]'' for which is known a trademark registration ({{Marchio|32169}}) from [[1925]], the attribution for the others is quite uncertain.

The '30s were a period of great activity for [[Montegrappa]], which in addition to creating its own models, became a major production company for others brands, building pens for a wide variety of companies, more or less known. Among these Letizia Iacopini, in the book ''La storia della stilografica in Italia'', reports: ''a.b.c.'', ''Aquila'', ''Astoria'', ''[[Atlantica]]'', ''[[Caesar]]'', ''[[Contessa]]'', ''Dacis AVR'', ''[[Domino]]'', ''[[Duchessa]]'', ''Montenero'', ''Pilus'', ''Titanus'', ''Vulcan-Saturnia'', ''[[Zenith]]''. Excepted ''[[Domino]]'' for which is known a trademark registration ({{Marchio|32169}}) from [[1925]], the attribution for the others is quite uncertain; in particular ''[[Atlantica]]'', ''[[Caesar]]'' and ''[[Zenith]]'' are known to be owned by other companies, tough production on commission cannot be excluded.