Every Mewtwo & Mew card we price, most valuable first. Prices are what copies actually sold for, updated daily.
The same Pokemon is also printed as Mewtwo, Team Rocket's Mewtwo, M Mewtwo and Rocket's Mewtwo, priced separately because the game treats them as different cards.
What a Mewtwo & Mew card is worth
The most valuable Mewtwo & Mew on this list is Mewtwo & Mew GX (Secret) from SM - Unified Minds at $422.64£318.10€372.21, and the 5 priced copies across 3 sets are worth $1.2k£893€1.0k together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.
Mewtwo & Mew is printed in Japanese as well: 6 cards across 2 sets, the most valuable of them Mewtwo & Mew GX from Miracle Twin at $474.38£357.04€417.77. Switch the list above to Japanese to read those, or to Both to rank the two catalogues against each other.
The highest PSA 10 on record for Mewtwo & Mew sold for $1,973£1,485€1,737. Rarities here include Secret Rare.
If you are trying to identify which Mewtwo & Mew you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: SM - Unified Minds, SM Promos, World Championship Decks.