Moisture in PSA Cards: Newton Rings and Rainbow Effect Explained
Ever look through your existing collection and notice that your PSA-graded card has moisture trapped inside it? You’ll see circles or bubbles, especially on insert or Holographic cards. Typically, there’s an iridescent pattern that’s unexplainable and uncommon. If yes, then you’re not alone, and an intriguing scientific phenomenon is behind it. Will go into why… Read More »Moisture in PSA Cards: Newton Rings and Rainbow Effect Explained