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Instead, until [[:Categoria:Pagliero-Brochure-1936|this brochure]] was found, it was unknown the use of the [[FERT]] brand, found on pens imprinted as  ''"F.E.R.T. Automatica Brevettata"'' with the reference to a patent ({{Cite patent|IT|330806}}) probably referring to the filling system, consisting of a thin U-shaped spring made from an elastic lamina, which can be side pressed to compress the rubber sac, after unscrewing a back blind cap much longer than the usual ones.

Instead, until [[:Categoria:Pagliero-Brochure-1936|this brochure]] was found, it was unknown the use of the [[FERT]] brand, found on pens imprinted as  ''"F.E.R.T. Automatica Brevettata"'' with the reference to a patent ({{Cite patent|IT|330806}}) probably referring to the filling system, consisting of a thin U-shaped spring made from an elastic lamina, which can be side pressed to compress the rubber sac, after unscrewing a back blind cap much longer than the usual ones.

La produzione delle [[FERT]] veniva attribuita alla [[Aurora]], probabilmente per l'utilizzo di questa sigla, acronimo del motto Savoia ''"Fortitudo Eius Rhodum Tenuit"'', su una [[R.A.]] prodotta per le campagne del ''Touring Club Italiano''.<ref>Letizia Jacopini nel suo testo parla di "probabile" produzione [[Aurora]], senza ulteriori riferimenti, e pur esistendo diverse registrazioni del marchio ''"F.E.R.T."'', nessuna è riconducibile a delle penne stilografiche e l'unica con una remota attinenza è quella della ''"Fabbrica Emilio Roggieri Torino"'' per "pennelli, smalti, vernici e colori, articoli affini"</ref> La brochure citata permette di datare con maggior precisione l'utilizzo di questo marchio da parte della ''Pagliero'' a partire dal 1936, e ne da una attribuzione precisa, pur restando incerto il significato della sigla ''"FERT"''.

[[FERT]] production was often attributed to [[Aurora]], probably for the use of this acronym for the Savoia motto "''Fortitudo Eius Rhodum Tenuit"'' on a [[Aurora R.A.|R.A.]] produced for the "Touring Club Italiano" campaigns.<ref> Letizia Jacopini in his book speaks of "probable" [[Aurora]] production without further references, and while there are several registrations of the ''"FERT"'' trademark, none is attributable to fountain pens and the only one with a remote relevance is that of "Fabbrica Emilio Roggieri Torino" for "brushes, enamels, varnishes and colors".</ref> This brochure allows to date more accurately the use of this brand by Pagliero since 1936, and give precise attribution, while is still uncertain of the meaning of the ''"FERT"'' abbreviation.

From this period there also the pens marked [[Plevonia]], which are the most valuable production of the company. These pens were made in ringed transparent cellulois, as a clear imitation of [[Vacumatic]], from which they also copied the filling system.<ref>they have inscripted the patent {{Cite patent|IT|329230}}.</ref> Were produced in two versions (with three rings or with a band and two rings), but in one size. They were equipped with gold nib marked ''Plevonia'' and ''585''.  

From this period there also the pens marked [[Plevonia]], which are the most valuable production of the company. These pens were made in ringed transparent cellulois, as a clear imitation of [[Vacumatic]], from which they also copied the filling system.<ref>they have inscripted the patent {{Cite patent|IT|329230}}.</ref> Were produced in two versions (with three rings or with a band and two rings), but in one size. They were equipped with gold nib marked ''Plevonia'' and ''585''.