Firstly, welcome to the forum, Sthermote! It would be great if you could introduce yourself in the "Welcome" section of the forum.
I don't have any complete examples of the sets you mention, though its a great crane! I think playmofire has correctly identified your set as 3527, an 'Export Exclusive' as Collector calls it. I personally think this should be described as 3527 version 2, because it is very similar to the earlier version, but with different stickers and klickies (many sets were reissued with free-wrist klickies after 1980, but in this case the klicky colours were different too). As it is shown in that 1987 catalogue, maybe it was available everywhere (the addresses shown on the back of the catalogue suggest this catalogue was a global one).
The rarity rating in Collector needs not to be taken too seriously. I have no idea how the ratings were decided, or whether they relate only to MISB, or only to the collectors (mainly German, or at least European?) consulted by Axel Hennel when he compiled the book. But I quite often find the ratings don't relate to how often sets turn up on eBay and the like.
Good luck with your search!