Armored Mewtwo is card #SM228 of 248 in SM Black Star Promos (2017), a Promo illustrated by 2019 Pikachu Project. At about $308 it is the #3 most valuable card in the set. It is one of 89 Mewtwo cards printed so far.
2 copies have been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Base Set
2003Ruby & Sapphire
2006Holon Phantoms
2009Pokémon Rumble
2015BREAKthrough
2017Shining Legends
2019Unified Minds
2023Crown Zenith

















See the full SM Black Star Promos card list
An ungraded Armored Mewtwo from SM Black Star Promos sells for about $308. A PSA 10 is worth more, roughly $1,538 by our estimate, and a PSA 9 around $708.
It is a Promo.
2019 Pikachu Project drew the art for this card.