This is possibly the most popular & well-remembered set from the WADDINGTON/Letraset spot colour Panoramas. You can see why…
A popular misconception is that this is one of Letraset's monochrome sets; it isn't. The Panoramas in this group each have four spot colours, apart from "Fairytale Landscape" & this one; they each have two sheets of two spot colours (black & white). At first glance it may appear that one sheet is entirely white, but the registration marks & serial numbers are in black.
Here's a detail to directly compare similar figures from the two sheets:
Picture Credit: The SPLAT Scan Archives
© Tom Vinelott 2017