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It seems that ''Edgardo Ercolessi'' was linked by kinship with Eugenio Verga, founder of [[Columbus]] and friendly relations with ''Armando Simoni'' founder of [[Omas]]. Thanks to his knowledge he was able to successfully address the writing instruments market and his company expanded with several stores in Milan, up to the central Corso Vittorio Emanuele. In his activities ''Edgardo Ercolessi'' began to propose in its stores pens explicitly marked with his name. It is unclear whether the origin of this production have been promotional needs or the need to stand out on the market, but in the long the company gave birth to productions with its brand.  

It seems that ''Edgardo Ercolessi'' was linked by kinship with Eugenio Verga, founder of [[Columbus]] and friendly relations with ''Armando Simoni'' founder of [[Omas]]. Thanks to his knowledge he was able to successfully address the writing instruments market and his company expanded with several stores in Milan, up to the central Corso Vittorio Emanuele. In his activities ''Edgardo Ercolessi'' began to propose in its stores pens explicitly marked with his name. It is unclear whether the origin of this production have been promotional needs or the need to stand out on the market, but in the long the company gave birth to productions with its brand.  

The first branded pens ''Ercolessi'', built in the early '20s, were hard rubber [[safety]] pens, in the [[Waterman 42]] style, almost certainly produced by [[Columbus]]. To these were added later [[lever filler]] models. To these followed [[Duofold]] style pensin in colored celluloid, presumably produced, as most of the ''Ercolessi'' branded pens of the '30s, by [[Omas]].  

The first branded pens [[Ercolessi]], built in the early '20s, were hard rubber [[safety]] pens, in the [[Waterman 42]] style, almost certainly produced by [[Columbus]]. To these were added later [[lever filler]] models. To these followed [[Duofold]] style pensin in colored celluloid, presumably produced, as most of the [[Ercolessi]] branded pens of the '30s, by [[Omas]].

These followed then other models, referred to as ''[[Ercolessi 5x|Series 50]]'', [[button filler]] derived from the [[Minerva Ellittica]] and produced with the same measures, adopting the same numbering copying the [[Numerazione Waterman|pattern]] used by [[Waterman]]: the 52½ V (short and thin, like a lady, ring), the 52½ (mean and thin), the 52 (medium) and 55 (large). The pens had however, contrasting the original, is decorated with three rings and different colors of celluloid.  

These followed then other models, referred to as ''[[Ercolessi 5x|Series 50]]'', [[button filler]] derived from the [[Minerva Ellittica]] and produced with the same measures, adopting the same numbering copying the [[Numerazione Waterman|pattern]] used by [[Waterman]]: the 52½ V (short and thin, like a lady, ring), the 52½ (mean and thin), the 52 (medium) and 55 (large). The pens had however, contrasting the original, is decorated with three rings and different colors of celluloid.