Modifiche

Roughly in [[1925]] was introduced the [[Platignum]] brand; at this time it seems there has been a kind of reorganization of the company. It seems that the intention was to use the name ''Platinum'', but that this was not registrable as a trademark since it is the name of a metal, so the name was changed slightly and the ''Platignum Pen Company '' was created, that began marketing [[Platignum]] branded pens, focusing on the low-end production in  comparison to the pens distributed with the main brand.  

Roughly in [[1925]] was introduced the [[Platignum]] brand; at this time it seems there has been a kind of reorganization of the company. It seems that the intention was to use the name ''Platinum'', but that this was not registrable as a trademark since it is the name of a metal, so the name was changed slightly and the ''Platignum Pen Company '' was created, that began marketing [[Platignum]] branded pens, focusing on the low-end production in  comparison to the pens distributed with the main brand.  

Per un certo periodo i due marchi sono stati prodotti insieme, la [[Mentmore]] venne trasformata in società per azioni nel [[1930]]. Non è chiara la situazione, c'è chi riporta che il marchio [[Mentmore]] sia stato progressivamente sostituito da [[Platignum]], ma dalla fine degli anni '30 agli anni '50 esiste una ampia produzione di penne con questo marchio. Inoltre un brevetto del 1936 ({{Cite patent|GB|457212}}) riporta esplicitamente il nome di ''Spot Pen Company'' come nuovo nome della ''Mentmore Manufacturing Company''. L'associazione con la produzione di penne [[Platignum]] è comunque stabilita almeno fino al 1951.<ref>grazie a [[:File:1951-Platignum.jpg|questa pubblicità]].</ref>

For some time the two brands were produced together; the [[Mentmore]] was transformed into a joint stock company in [[1930]]. The situation at that time is not clear, there are those who reported that the brand [[Mentmore]] has been progressively replaced by [[Platignum]], but by the late '30s to the' 50s, there is a large production of pens with this brand . Also a patent of 1936 ({{Cite patent|GB|457212}}) explicitly shows the name of ''Spot Pen Company'' as the new name of ''Mentmore Manufacturing Company''. Association with [[Platignum]] brand is established at least until 1951.<ref>thanks to [[:File:1951-Platignum.jpg|this advertisement]].</ref>

Around 1939-1941 (?) was produced the [[Mentmore Paramount]] model, an imitation of the [[Waterman]]'s [[Hundred Year]], it was also a plastic resin [[lever filler]] pen, and with a decorative transparent plastic bottom similar to that used by [[Waterman]]. The pen, however, had more slender lines. Another imitation is the [[Mentmore 46]], an hooded nib [[button filler]] pen, which was clearly inspired by the [[Parker 51]].

Around 1939-1941 (?) was produced the [[Mentmore Paramount]] model, an imitation of the [[Waterman]]'s [[Hundred Year]], it was also a plastic resin [[lever filler]] pen, and with a decorative transparent plastic bottom similar to that used by [[Waterman]]. The pen, however, had more slender lines. Another imitation is the [[Mentmore 46]], an hooded nib [[button filler]] pen, which was clearly inspired by the [[Parker 51]].