Thanks for correcting me Mark. I was a little puzzled that even with an assumed area (on my part) of 850 squares, it would have a span of 73" and a length of 65". With that span it has to have well over 900 squares! I assumed it was an 850 because I recall the pictures below and hearing that the foreground model was an 850 while the rear model (presumably identical to the one on auction) was a modified version of it but essentially of the same size.

In short, not having pictures of the complete Tipo lineup over time (despite your abundant help on this in the past), I called it incorrectly.

The question that I have now is: Does the Hippo in these pictures have a RE Webra 60 or something else? Hard to imagine a model this size flying well on a 60. They must build to around 9-10 lbs. I guess there were several other large 6' planes built with 60's.

David.