Dialga is card #6 of 127 in Platinum (2009), a Rare Holo illustrated by Kouki Saitou. At about $26.91 it is the #28 most valuable card in the set. In a Platinum booster it turns up about once every 52 packs. It is one of 48 Dialga cards printed so far.
2007Diamond & Pearl
2009Platinum
2011Call of Legends
2014Phantom Forces
2020Vivid Voltage
2022Astral Radiance
2024Surging Sparks
202630th Celebration

















See the full Platinum card list
An ungraded Dialga from Platinum sells for about $26.91. A PSA 10 is worth more, roughly $215 by our estimate, and a PSA 9 around $75.35.
It is a Rare Holo, and it shows up about once every 52 Platinum packs.
Kouki Saitou drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Platinum booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.