From reading comments on German web sites, it would appear that Lisenfeld made a quality product while the owner was alive, but after his death the firm was sold, and the name was used to market a line of inexpensive imported scopes. At one point the owner was using the trade name "Jaguar" and he got into a legal tussle with the British car maker over the use of the name.
The scope on this drilling does not look like a German scope. In particular the ring used for magnification adjustment just looks like one on a cheap imported scope. I hope I'm wrong. I bought the drilling on the assumption that the scope was junk. If it is not, then I have experienced a windfall.
