How To Find My Stereo Unlock Code?

Hi there, I was asked to give details of all info on radio's casing as previous attempts had failed, so...
Its a BMW Business RDS in a '97 Z3

ON BOTTOM LABEL..
Serial # PH7850V1248846
Other # 65.12-9 405 546
Other # KW 13/97 index:01

ON BACK LABEL..
785/23F
97131 WA01

ON TOP LABEL..
Following codes in boxes..B06, D20, D24, C07, D28, A76.

Many thanks for any help.

Paul.