In the week when they discovered the body of a unicorn (and then announced that they hadn't), I've managed to discover a couple of strips that I don't know anything about. But I do believe they are reprints, either from Spirou or Tintin, probably the former.
I'm hoping that one of our European readers will be able to spot where these originated. I'll start with one that's short and sweet as I have only one example. This ran in the UK for only six weeks between April and June 1966. This looks to me as if it was drawn with colour in mind.