MADE IN WEST || GERMANY with MADE IN W. GERMANY BY PDO etched around the center hole.
These are the only three disc variations that I am aware of.

front cover of the booket

Rear tray insert, "Printed in West Germany" with UPC.
The POLYGRAM (no PDO) version can be found with this back inlay.

The versions with PDO in the hub area can be found in this rear inlay,
"Printed in U.S.A." with UPC. US target and non-target, and Japanese non-target pressings
can also be found with this US insert.

Notes: Not long ago, I considered this disc fairly easy to find, based on my experiences in finding them
at used CD stores. I guess I was lucky back then, as most collectors have had a very hard
time finding a copy. It is on many collectors' wantlists.