These four reduced-size Panoramas — Captain Scarlet, Doctor Dolittle, Jungle Book, & Walt Disney — were first produced in 1968, but we don't have the original version of this one, so we can't show you the earliest cover or transfer sheet.
The 1971 cover is followed immediately by the 1976 reissue (GK232/2) which Letraset produced after they had 'reclaimed' the Panorama title from Waddington.
Letraset took for re-use the most easily accessible artwork (which would have been from the latest printed version, i.e., the 1971 half-frame edition above) & simply eliminated any references to John Waddington Ltd.
You can see for yourself the few differences, which are enumerated fully in the Jungle Book Panorama feature (use the "Back" button at the bottom of this page).
We're showing this used background so that you can see that the 1968/1971 transfers are identical to the 1976 GK232/2 sheet.
Here's a detail to illustrate the translucency of the transfers. Letraset were still experimenting with techniques & materials; this unusual effect occurs on other 1971 Panoramas. We haven't tried applying the reprinted transfers, but since the problem was no doubt due to the choice of inks used at the time, I'm sure it would have been fixed!
Letraset printed Rotary Gravure transfers on sheets which were, when uncut, of the size known as Crown: 15" x 20" (381mm x 508mm).
Here's the GK232/2 sheet. You can see that the cut sheet is divided into two panes. This would make it very easy for Letraset to repurpose these Panorama sheets as Fun Doodles (one pane per pack) or similar…
Typically, a sheet of Crown would be divided into eight panes, with four different sets each printed twice on the sheet, as in this example of the four earliest Fun Doodles:
So you could get all four cut GK232 sheets on one uncut sheet of Crown, shown below in simulation, & possibly repurpose three of them (the exception being Jungle Book):
Picture Credit: The SPLAT Scan Archives
© Tom Vinelott 2017