Sentret is card #80 of 123 in HeartGold & SoulSilver (2010), a Common illustrated by Mahou. At about $2.69 it is the #116 most valuable card in the set. In a HeartGold & SoulSilver booster it turns up about once every 7 packs. It is one of 11 Sentret cards printed so far.
2000Neo Genesis
2001Neo Discovery
2004Team Rocket Returns
2006Legend Maker
2008POP Series 7
2010HeartGold & SoulSilver
2020Darkness Ablaze
2025Journey Together

















See the full HeartGold & SoulSilver card list
An ungraded Sentret from HeartGold & SoulSilver sells for about $2.69. A PSA 10 is worth more, roughly $21.52 by our estimate, and a PSA 9 around $7.53.
It is a Common, and it shows up about once every 7 HeartGold & SoulSilver packs.
Mahou drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HeartGold & SoulSilver 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.