Gyarados

Gyarados (123/123), the Holo Rare from HeartGold SoulSilver, has an estimated ungraded market price of about $315, typically in the $270–$360 range. Note: 24 other cards named Gyarados exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Gyarados (123/123), the Holo Rare (about $270–$360) from HeartGold SoulSilver.

The other versions: #11/144 from Skyridge (Rare, about $175–$230); #8/107 from Deoxys (Rare, about $85–$115); #7/95 from Call of Legends (Holo Rare, about $70–$95); #21/98 from Ancient Origins (Rare, about $55–$75); #4/123 from HeartGold SoulSilver (Holo Rare, about $50–$70); #H10/144 from Skyridge (Holo Rare, about $49–$65); #12/110 from Legendary Collection (Holo Rare, about $43–$60); #6/102 from Base Set (Rare, about $42–$55); #7/130 from Base Set 2 (Rare, about $41–$55); #32/97 from Dragon (Uncommon, about $16–$21); #19/100 from Stormfront (Rare, about $15–$20); #26/123 from Mysterious Treasures (Rare, about $11–$15); #30/181 from Team Up (Rare, about $10–$13); #34/108 from Evolutions (Rare, about $8–$11); #20/70 from Dragon Majesty (Rare, about $3–$4); #24/124 from Dragons Exalted (Rare, about $3–$4); #33/147 from Burning Shadows (Rare, about $2–$4); #40/192 from Rebel Clash (Holo Rare, about $1–$2); #31/113 from Legendary Treasures (Rare, about $1–$2); #23/83 from Generations (Rare, about about $1); #20/98 from Ancient Origins (Rare, about $0.90–$1); #022/78 from Pokémon GO (Holo Rare, about under $1); #130/165 from 151 (Rare, about under $1); #043/193 from Paldea Evolved (Rare, about under $1).

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

Gyarados (123/123) is a Holo Rare. PSA has graded 620 copies to date, so graded supply is measurable and growing.

Of the 620 copies PSA has graded, 2% 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.