You're definitely talking about GŁnther - the guys who make the Twinstar props :
They chop and change their decor. Sometimes you can get both the glider and the rubber powered model, sometimes just one.
On the above website you will see the 'Apache' rubber powered model when you scroll down.
My Dad brought me back the glider on a trip to Germany in about 1961 and it was a total revolution in comparison to the small Keil Kraft models available in England at the time.