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Around [[1925]] [[Mentmore]] introduced the ''Platignum'' brand for its lower-end pens production. At that time it seems there was some sort of reorganization of the company and that the intention was to use the ''Platinum'' name, but this was not registrable as a trademark since it's the name of a metal. Therefore, the name was slightly changed and the ''Platignum Pen Company'' (it is not clear how much independent from the parent one) was specifically created, and it began directly marketing ''Platignum'' branded pens, focusing on the low-end production compared to pens distributed by the main brand.  

Around [[1925]] [[Mentmore]] introduced the ''Platignum'' brand for its lower-end pens production. At that time it seems there was some sort of reorganization of the company and that the intention was to use the ''Platinum'' name, but this was not registrable as a trademark since it's the name of a metal. Therefore, the name was slightly changed and the ''Platignum Pen Company'' (it is not clear how much independent from the parent one) was specifically created, and it began directly marketing ''Platignum'' branded pens, focusing on the low-end production compared to pens distributed by the main brand.  

According to the company website in 1925 with the birth of ''Platignum'' there would be the creation of a replaceable group nib, which could therefore be considered as an antecedent of the [[Eversharp]] [[Personal Point]] system, and of the various similar systems adopted later by other companies (such as [[Bayard]], [[Esterbrook]] and [[Pelikan]]). Also on the company's website proclaims that the ''Platignum'' was the first company to have used, in 1925 itself, plastic injection molding for the production of their pens and have introduced stainless steel nibs with the slogan ''"As good as gold"''.

According to the company website in 1925 with the birth of [[Platignum]] there would be the creation of a replaceable group nib, which could therefore be considered as an antecedent of the [[Eversharp]] [[Personal Point]] system, and of the various similar systems adopted later by other companies (such as [[Bayard]], [[Esterbrook]] and [[Pelikan]]). Also on the company's website proclaims that the [[Platignum]] was the first company to have used, in 1925 itself, plastic injection molding for the production of their pens and have introduced stainless steel nibs with the slogan ''"As good as gold"''.

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