Tracking down an Olloid?!

[HoW]

I am trying to generate waves in a round tank and have been told (by the very helpful TUNZE) to try and find an Olloid. Apparently its a rugby/American football shaped wave generator that circles the tank while gyrating. It was made in Austria, and is probably discontinued as I can't find it anywhere. If anyone has seen/heard of one or knows where to buy one Id be very interested.