tango.info reference URL for this product: https://tango.info/07730723288500
Bernhard Gehberger confirmed the GTIN from reading the cover:
7 730723 288500
Note that this does not agree with the reported RL28852 - the last digit being "2", which often is a marker for a CD. The GTIN with the 2 would be 07730723288524.
Another product with same name and track listing, but different cover (black and red only) is reported. The GTIN for that is 07798121840027.