Mewtwo

Mewtwo (056/172), the Rare from Brilliant Stars, has an estimated ungraded market price of about under $1. Note: 14 other cards named Mewtwo exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Mewtwo (056/172), the Rare (about under $1) from Brilliant Stars.

The other versions: #29/110 from Legendary Collection (Rare, about $650–$840); #20/165 from Expedition Base Set (Rare, about $610–$790); #144/146 from Legends Awakened (Rare Holo LV.X, about $230–$300); #11/146 from Legends Awakened (Rare Holo, about $95–$125); #56/165 from Expedition Base Set (Rare, about $90–$120); #10/102 from Base Set (Rare, about $65–$90); #9/100 from Majestic Dawn (Rare Holo, about $65–$85); #10/130 from Base Set 2 (Rare, about $50–$70); #53/113 from Legendary Treasures (Rare, about $39–$55); #51/108 from Evolutions (Rare, about $11–$15); #75/214 from Unbroken Bonds (Rare, about $6–$9); #150/165 from 151 (Rare, about $4–$5); #059/159 from Crown Zenith (Holo Rare, about $3–$5); #059/142 from Stellar Crown (Uncommon, about $0.80–$1).

The collector number printed at the bottom of the card is the reliable way to tell them apart.

Ahead after fees: with a 21% PSA 10 gem rate and current graded prices, grading a near-mint Mewtwo (056/172) is estimated to net about $53 more than selling it raw (est.).

Assumes ~$25/card bulk-rate grading (standard service costs more); ignores turnaround time, sub-9 grades, and shipping. A screen, not a promise.

Mewtwo (056/172) is a Rare. PSA has graded 1,478 copies to date, so graded supply is measurable and growing.

Of the 1,478 copies PSA has graded, 21% earned a PSA 10. That's a low gem rate, so flawless copies are genuinely hard to come by. Grade-by-grade population and pop-over-time appear with Riffle premium.