Slowking

Slowking (12/123), the Holo Rare from HeartGold SoulSilver, has an estimated ungraded market price of about $42, typically in the $36–$47 range. Note: 15 other cards named Slowking exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Slowking (12/123), the Holo Rare (about $36–$47) from HeartGold SoulSilver.

The other versions: #H22/147 from Aquapolis (Holo Rare, about $520–$680); #14/18 from Southern Islands (Common, about $240–$320); #14/111 from Neo Genesis (Rare, about $65–$90); #14/115 from Unseen Forces (Rare, about $65–$90); #85/90 from Undaunted (Rare PRIME, about $55–$75); #34/147 from Aquapolis (Rare, about $31–$40); #28/113 from Delta Species (Rare, about $5–$7); #32/95 from Call of Legends (Rare, about $4–$6); #49/108 from Dark Explorers (Rare, about $4–$6); #28/106 from Great Encounters (Rare, about $3–$4); #55/214 from Lost Thunder (Rare, about $3–$4); #21/122 from BREAKpoint (Rare, about about $1); #48/147 from Burning Shadows (Rare, about under $1); #058/142 from Stellar Crown (Uncommon, about under $1); #019/131 from Prismatic Evolutions (Uncommon, about under $1).

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

Slowking (12/123) is a Holo Rare. PSA has graded 113 copies to date, so graded supply is measurable and growing.

Of the 113 copies PSA has graded, 4% 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.