An import explains it!
I did wonder if it had been a grey import from Belgium or the Netherlands which had been a popular route around that point in history.
I knew of a mk4 R32 that had been imported from Japan some years ago, it was really surprising just how many parts differed to EU spec cars, from things like the windscreen and side glass safety etchings to the numberplate apertures being different, not just lack of wax and radios that didn’t have the right bandwidths.
There’s an importer not far from me that brings in JDM spec rarities direct from Japanese auctions, people pay a fortune for these things!