"Junior" Pocket Microscope From Germany?

I don't recall if I saw a lead to this scope in this ng, or elsewhere, but today
I found a German microscope that was stamped "Junior" on the case. It fits into
a cylindrical brass case (about 40mm dia. x 140 mm long), and when set up it
rests on three legs that screw into the supporting body. The single objective is
actually 3 lenses that can be unscrewed individually (like removing the top lens
from a condenser). The ocular has a "3" engraved on it.

With all 3 objective elements attached, the magnification is around 100x. The
images are pretty good for such a small device. The only issue I have with it is
that I can't find a way to remove the tube lens to clean the lower surface.

I would post a picture of it, but don't have a site handy for that purpose. Has
anyone got any information about this scope? Age, manufacturer, etc?

Thanks,
Joe
.