Vintage WILH. WELTERSBACH SOLINGER GERMANY

[Knarls]

I Have this vintage German folding Bowie knife. I am just wondering if anyone has a little more information they could share about the knife.

 

[Knarls]

https://i.imgur.com/yDEEr4n.jpg

https://i.imgur.com/DH7Ge7R.jpg

https://i.imgur.com/XSjPpVQ.jpg

https://i.imgur.com/ruw89CZ.jpg

 

[marcinek]

What would you like to know?

 

[Knarls]

Anything really. Friend of mine just gave it to me. Don't know anything about it other then it's German. Maybe how old?
How many?
Rare or not rare?
Anything you can give.