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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"''.

For some time the two brands were produced together, the [[Mentmore]] was transformed into a joint stock company in [[1930]]. It is not clear the situation at that time, there are those who reported that the [[Mentmore]] brand has been progressively replaced by [[Platignum]], but by the late '30s to the '50s, there is still a large production of pens with this brand.  

For some time the two brands were produced together, the [[Mentmore]] was transformed into a joint stock company in [[1930]]. It is not clear the situation at that time, there are those who reported that the [[Mentmore]] brand has been progressively replaced by [[Platignum]], but by the late '30s to the '50s, there is still a large production of pens with this brand. Association with [[Mentmore]] is established at least until 1951.<ref>thanks to [[:File:1951-Platignum.jpg|this advertisement]].</ref>

During the war the pens production was reduced to meet the needs of the war effort. It is reported that the company produced pens for spies with maps and compasses or with poisonous darts. The production resumed after the war also with the creation of ballpoint pens. The evolution of the brand is uncertain as well as relations with the parent company. And today both [[Mentmore]] and [[Platignum]] exist as independent brands.

During the war the pens production was reduced to meet the needs of the war effort. It is reported that the company produced pens for spies with maps and compasses or with poisonous darts. The production resumed after the war also with the creation of ballpoint pens. The evolution of the brand is uncertain as well as relations with the parent company. And today both [[Mentmore]] and [[Platignum]] exist as independent brands.

===External references===

===External references===

* [http://hans.presto.tripod.com/scan/platignum02.html] company history, for its old website.

* [http://hans.presto.tripod.com/scan/platignum02.html] company history, from its old website.

* [http://www.fountainpennetwork.com/forum/index.php?/topic/32159-mentmore-auto-flow/] discussion with some historical informations.

* [http://www.fountainpennetwork.com/forum/index.php?/topic/32159-mentmore-auto-flow/] discussion with some historical informations.

* [http://www.writetime.co.uk/mentmore/mentmore.htm] short history with some model name and photos.

* [http://www.writetime.co.uk/mentmore/mentmore.htm] short history with some model name and photos.

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