Chansey is card #72 of 165 in Expedition Base Set (2002), a Uncommon illustrated by Sumiyoshi Kizuki. At about $56.97 it is the #83 most valuable card in the set. In an Expedition Base Set booster it turns up about once every 16 packs. It is one of 25 Chansey cards printed so far.
1999Base Set
2002Expedition Base Set
2003Ruby & Sapphire
2005Unseen Forces
2010HeartGold & SoulSilver
2014Phantom Forces
2018Lost Thunder
2021Fusion Strike

















See the full Expedition Base Set card list
An ungraded Chansey from Expedition Base Set sells for about $56.97. A PSA 10 is worth more, roughly $741 by our estimate, and a PSA 9 around $228.
It is a Uncommon, and it shows up about once every 16 Expedition Base Set packs.
Sumiyoshi Kizuki drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Expedition Base Set 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.