OK, I have 1000's of slot club cards and room keys and I do have a few cards that "guide" in the higher end range.

So what do you do to store cards that exceed the "average value"?

Most my cards are in boxes and a lot of my better cards are in the 9 pocket business card sleeves, but I would like to put the better cards (in my opinion) in something else.

Would putting the cards in the one inch Lucite (screw-tite) blocks be fine for the cards?

I’m concerned about the cards yellowing or becoming brittle and I would like them to survive more than 10 – 20 years.

Any ideas for the best protection of slot club cards?

Thanks!!