If you live in Switzerland, you would see this logo associated with the store chain Dosenbach.
I was recently in Germany, and I saw what appeared to be the identical logo.
However, it was associated with a shoe chain called Deichmann. I assumed that the store chains were related, and research confirmed it. Deichmann acquired Dosenbach in 1973 (see Dosenbach link, Wikipedia link). How fortunate was that acquisition? Deichmann acquired a competitor with a name that started with a "D". Now, it could use the same logo for both businesses create a connection between the businesses / brands (see my posts on Aquafresh / Odol-med3 and Crest / Blend-a-Med for examples of how businesses created connections between their brands).