Shadowless Zap Theme Deck Hunting: 6 Steps
If the box is sealed, it should have a horizontal pull strip and not a vertical one. If the horizontal strip is gold, BUY IT IMMEDIATELY! It will be shadowless.
The “Theme Deck” text on the front should be written in black ink not blue.
On the back, the “10 Damage Counters” should be shown
The 1st edition Pikachu should be in front of the Energy cards
The yellow and blue damage counters will be displayed above the Energy cards
The deck is on the top portion of the deck box and not the bottom. You will need to be very careful when squeezing the sealed deck box to prevent accidental damage to the shrink wrap