Lynn, so far I have seen no special designer patterns in vintage Burdas. What we're talking about here is the "normal" Burda Moden magazine - which was a monthly, and besides loads of sewing patterns also had things like short stories, recipes, some knitting/crocheting/embroidery projects, occasionally fashion advice, agony aunt columns... everything to keep women entertained
. I think they did follow the trends, but were never over-daring, it was always made wearable. I know my mom has one 60s issue that has a preview of the next issue that says it would have the first pattern for a transparent blouse, and one of the late 50s issues shows apparently their first pattern for a sack-back dress. So they did follow the trends, but didn't overdo it I'd say. Mom keeps buying the vintage 50s to early 70s ones now because they have the patterns that interest her - she doesn't buy the current Burdas anymore, because the styles in there are of little interest to her she says. She used to buy it every month, and I used to look at them too - I've probably seen every issue roughly from about 1990 when I got first interested in fashion etc. til 2000 when I moved out of home. They had some designer patterns in the late 90s - I remember there was a Chloé pattern designed by Karl Lagerfeld when he still did Chloé that I had liked a lot. At that time I think it was one pattern per issue.
But there's also "Burda International", which my mom barely ever bought and which has existed since the 70s at least. I'm not sure if it was a monthly one too, or only appeared quarterly. That one it seems was more about international trends, at least judging by the way it was advertised in the 70s Burda Moden. Maybe Burda International had designer patterns...
Karin