Mankey is card #52 of 114 in Steam Siege (2016), a Common illustrated by Hitoshi Ariga. At about $0.35 it is the #104 most valuable card in the set. In a Steam Siege booster it turns up about once every 6 packs. It is one of 27 Mankey cards printed so far.
1999Jungle
2002Legendary Collection
2006Holon Phantoms
2009Supreme Victors
2016Steam Siege
2019Team Up
2024Paldean Fates
2026Pitch Black

















See the full Steam Siege card list
An ungraded Mankey from Steam Siege sells for about $0.35. A PSA 10 is worth more, roughly $1.75 by our estimate, and a PSA 9 around $0.80.
It is a Common, and it shows up about once every 6 Steam Siege packs.
Hitoshi Ariga drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Steam Siege 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.