Gym Heroes: How to Identify Cards From This Set

• This set introduced the 'Owner's Pokémon' design: card names carry a Gym Leader's name (e.g. Brock's Rhydon), with a headshot of that Trainer in the bottom right corner of the card, set against their Gym Badge.
• Rarity is shown by a small symbol at the bottom of the card: circle = Common, diamond = Uncommon, star = Rare.

• 1st Edition: One of the sets between Base Set and Neo Destiny (except Base Set 2) that had a 1st Edition print run, with the same stamp rule as other sets.

The 'Owner's Pokémon' card-name format (e.g. XX's YY) is the distinguishing feature that sets Gym Heroes and Gym Challenge apart from other WOTC-era sets.

• Bottom-left or bottom-right corner: the set symbol and the collector number (e.g. 4/102) tell you the set; older cards have no symbol at all, which itself narrows them to Base Set.
• Left of the number: a 1st Edition stamp, if present, sits below the art on WOTC-era cards.
• Regulation mark (a letter in a box near the bottom, D through H so far) dates modern cards to a two-year window.
• Back of the card: the blue Poké Ball back has changed little since 1999; a washed-out, blurry or wrongly colored back is the first sign of a fake.

Lay the card flat on a dark surface in daylight, straight on, with the whole card in frame, then a close-up of the bottom edge where the set symbol, number and any edition stamp sit. Tilt holo cards under the light for a second shot to show the foil pattern. Photograph the back too. The app reads the card and set; the edition and rarity checks above tell you which version you have.