MADE IN USA | | BY PDO
My copy also has MADE IN USA BY PDO etched around the center hole.
I'm not sure if all copies have that extra inscription.
Matrix number: 7559 60 175-2 2893 409 02 *
Known suffixes: J
Front cover of the eight-page booklet
Page seven states "Printed in U.S.A."
Rear tray insert "Printed in U.S.A." with barcode.
Only rear inlay known to contain the US target disc.
Nothing is printed on the reverse.
Notes: This disc is very hard to find. I only know of a few copies in collector hands.