I looked for you in my Burda Specials. For sure the year is from 1980 and up.
On a Russian website I found an unusable bad scan. Also I found out that the pattern was published in an Italian Burda Special.
What you could do: post in the German group as well. They are the closest to the matter with Burda's as Burda is German of origin.
Hope you find what you're looking for!!!