I can tell you for sure that the word "royal Sweden Crystal" does not occur in the 1990 catalogue or in the 8/87 supplement - so it must have been a passing phase.
I would not be surprised, though, if the brothers used labels for bought pieces which they sold under their own name. I suspect the tiger may be Barovier, the Christmas trees Barbini, the elephant VSL (Linda de Sousa) and the crystal swords Sardinia. The horse's head looks familiar too..... and it is not uncommon to see glass makers sell glass from colleagues. Last time I was in Milano I found a JZB figurine with Barovier stickers!