Here's a photo of the display box, taken from the Thomas Salter 1981 trade catalogue:
(You can either pick the Panorama of your choice from the above three links, or simply follow the link at the bottom of this page to get to the first one — & from there to the next, & so on.)
Note that, as shown on the back of each pack, the three backgrounds could be stacked to produce a kind of super-panorama; here it is without transfers applied. The resulting concatenation of wildlife would be distinctly weird, but perhaps none the worse for that!
Picture Credit: The SPLAT Scan Archives
© Tom Vinelott 2017