That's a crazy goal-post move. You're the one who said they were "brought back" by JPII, so the burden's on you to prove it.
However, the Baltimore Catechism talks about them, it was written in the 1800's long before JPII was born, so they were certainly established and in use by that time. Luther said a lot about them, so certainly they were established prior to that. The Fourth Lateran Council dealt with abuses of indulgences and St. Thomas Acquinas wrote about them, both of these in the 1200's so they were established before that... do you need me to keep going? Luther rejected the Books of Maccabbes in part because they explicitly show that the idea of indulgences was known among the Jews prior to the time of Christ.
The idea that the use of indulgences in the Catholic Church is a recent development, is just crazy.