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Giacomazzi worked mainly in contract manufacturing, and no pens bearing its name can be found at least until the 1950s. The only trademark that is definitely its own is [[Olimpica]] for which there is a registration in [[1944]] by Dino Giacomazzi  ({{Marchio|90736}}), other quality brands which production is attributed to Giacomazzi are [[Point red]] (which however was an Ubaldo Massari of [[Mastilo]] trademark), [[Sirium]] and [[Sirium Extra]].<ref>but for the latter there is an evidence: on a pen with this brand was found (see [https://forum.fountainpen.it/viewtopic.php?f=13&t=17299|this discussion]) a reference to the utility model {{Modello|22111}} registered by the "Fratelli Giacomazzi".</ref>

Giacomazzi worked mainly in contract manufacturing, and no pens bearing its name can be found at least until the 1950s. The only trademark that is definitely its own is [[Olimpica]] for which there is a registration in [[1944]] by Dino Giacomazzi  ({{Marchio|90736}}), other quality brands which production is attributed to Giacomazzi are [[Point red]] (which however was an Ubaldo Massari of [[Mastilo]] trademark), [[Sirium]] and [[Sirium Extra]].<ref>but for the latter there is an evidence: on a pen with this brand was found (see [https://forum.fountainpen.it/viewtopic.php?f=13&t=17299|this discussion]) a reference to the utility model {{Modello|22111}} registered by the "Fratelli Giacomazzi".</ref>

But as testified by Pier Luigi Giacomazzi, other productions have been made on commission by the company, for [[Everest]], [[Aster]], [[Silpa]], [[Omer]], [[Morans]] and [[Aviostil]].  

But according to Pier Luigi Giacomazzi, other commissioned productions were carried out by the company for [[Everest]], [[Aster]], [[Silpa]], [[Omer]], [[Morans]] and [[Aviostil]].  

Available material: {{GenerateSmallBrandGallery|Giacomazzi}}<noinclude>

Available material: {{GenerateSmallBrandGallery|Giacomazzi}}<noinclude>