identification help

[enchiridion]

here is a Bermond pen. I was wondering who the original manufacturer was. I've seen similar models with no brand or with Trevire (named after a Belgian tribe in the Roman period).
The nib is 14ct and has a circle which left half is a sun or so (585)
the cork is bad, and there a two small hairline cracks (one in the cap and one in the tip where the feed and nib used to be badly inserted).LGO_8215.jpgLGO_8212.jpgLGO_8204.jpgLGO_8206.jpg

[Tony Rex]

Bermond The company created by the Beirlaen Raymond in 1919, the site is located 19 Karthuizeratraat, Brussel, its trademark name is derived from the abbreviation of the founder, the company produced a pen for domestic and exported to the Congo was a colony of Belgium, the pen and accessories purchased from the German Merz & Krell company, and from Mutchler, of Heidelberg since the 50s onward.

From http://fymaoyichanel.blog.com/2011/10/29/pen-belgium/ edited from the old English (lol!) into modern English.

[enchiridion]

this I already knew, but what is the origin of this kind of pens?