The mystery is the box.
When did this happen? How did it happen? Why did it happen?
This is a mystery that has baffled everyone I've asked, and I've asked people you might expect to know. My guess is that this dates from the 1970s or perhaps early 1980s. But that's all it is, a guess.
The range, judging from the model on offer, encompassed quite a range of prototypes. Scales seemed to be determined by the size of the box as the airline I saw was only a couple of times the wingspan of this model.
Can anyone shed light on the history of these models?