Serial Number Mount E Blade Looking For A Pricing Or More Info On 1917 Brevetee 8mm Mountable Machinegun?

Looking for a pricing or more info on 1917 Brevetee 8mm mountable machinegun? - serial number mount e blade

I have a machine gun in the basement (no editing, but it has a bipod, and surprising in their ability) on the page that says Brevette 8mm, then make your 1917, then we can say that their series numbers. I know nothing about this weapon, but my main question is how much it worth anything? All information that is on this answer acceptable.