MADE IN || WEST GERMANY (no manufacturer on disc)
No other variations that I know of.

front cover of the booklet

Rear tray insert, Printed in West Germany, with UPC
Only rear tray inlay known to contain the target disc.
West German pressed silver stock discs with black printing (non-target)
also came with this back insert. Beware!

Notes: This disc is quite hard to find.
Not impossible, but it does present a challenge.