Rarity Identification:
* Holofoil: Ancient Mew in the Gym Heroes set is a Holofoil Rare. This means the card features a holographic pattern that shimmers when light hits it.
* No other rarity markers: Unlike later sets, there are no other rarity markers on this specific Ancient Mew card (like stars or diamonds).
How to tell if it's rare:
* Look for the holofoil effect: The most obvious indicator is the shimmering holographic pattern on the card. If it's present, it's a rare card.
* Compare to other cards: If you have a standard non-holofoil Gym Heroes card to compare it to, the difference in sheen and appearance will be very clear.
Things to watch out for:
* Reprint sets: Ancient Mew has been reprinted in other sets, such as the Japanese "EX Battle Frontier" set. These reprints are not as valuable as the original Gym Heroes version, so be sure to check the set symbol on the bottom right corner of the card.
* Condition: The condition of the card (e.g., scratches, creases, wear) will significantly impact its value.
For accurate identification and value assessment:
* Refer to online resources: Websites like TCGplayer and Pokebeach provide detailed information on card rarities and values.
* Consult with experts: If you're unsure or have a potentially valuable card, consider consulting with a reputable card grading service or collector.
Remember: The value of a rare card can vary widely based on its condition, rarity, and market demand.