Your walkman appears to be mint. Unfortunately I do not have any Grundig walkman at all. Grundig is one of the best vintage electronic brands. By the way you take great pictures, the first 2 pictures are perfect.
I think the Grundig BB100 is up to par with other first generation walkmans.... And the one pictured, BB190 is just as good as all the best non DD's...... Oh..... Thx for your PQ feedback, but you are kindly joking around with me i think...... I took then in bad daylight with my iPhone 4.....:-(
I was not joking at all. excellent photography creates a lot of attractions for viewers. I do have a lot of walkmans in brand new condition and to be honest with you i enjoy more by looking at walkman_archive's DC2 photo than my own brand new DC2 (actual walkman) your 2 first pictures are excellent