I've not seen one like that before, few more questions:
- how long is it?
- does it have tip/nock overlays?
- Is there any other writing e.g. a model no.?
Made for the European market (non UK) as marked in KG & LBs.
Seems to be walnut handle/riser & hickory limb lams.
I'm guessing late '60s for that style & first thought is something by
Canadian cos. either Dunsdon "Wildcat" or Archery Craft (like "Centennial" but simpler).
2nd thought, as the "Pladfinder" looked like a Slazenger,
wondering if it could be a rebadged Slazenger "Demon", the description fits, but is it 66" length?
I've never seen one in the wood & this advert only appeared in '69 & not again.
I'd seen mention somewhere that Frantisek Hadas (Czech, a world champ at one time)
had some association with Wings
& I believe he did design & make bow limbs & maybe whole bows (also known for his work with Zopf),
so ....
Maybe try cross-posting question on a German forum?