Cleffa is card #HGSS12 of 25 in HGSS Black Star Promos (2010), a Promo illustrated by Masakazu Fukuda. At about $34.41 it is the #16 most valuable card in the set. It is one of 17 Cleffa cards printed so far.
1999Wizards Black Star Promos
2000Neo Genesis
2005Unseen Forces
2007Diamond & Pearl
2010HeartGold & SoulSilver
2011Call of Legends
2019Cosmic Eclipse
2023Obsidian Flames

















See the full HGSS Black Star Promos card list
An ungraded Cleffa from HGSS Black Star Promos sells for about $34.41. A PSA 10 is worth more, roughly $275 by our estimate, and a PSA 9 around $96.35.
It is a Promo.
Masakazu Fukuda drew the art for this card.