Key Authentication Principles

​

Welcome to the Authentication section of PeruGPKing.com, your resource for information on original 1989 Peruvian La Pandilla Basura cards/stickers, packs, wrappers, and albums from key things to know about originals to reprints, and reproductions.

​

Because this ultra-rare cards have no official PSA grading population reports (POP 0 for the set), and because modern reprints do circulate in collector markets (especially online), knowing what to look for is essential before buying, trading, or adding to your collection.

​

This guide draws directly from production insights shared by J.P. Navarrete, GM of Navarrete (the successor to Editorial Navarrete, the original publisher). These details come from knowledge gathered of the 1989 manufacturing process, equipment, and materials used at the time.