It is card 11 of the 132 in the official Gym Heroes checklist. If you are completing the set, mark it in your collection to keep track.
Rarity: Holo Rare. The symbol in the bottom corner confirms it at a glance, as explained in Pokémon card rarities explained.
It exists in several finishes (Holo, 1st edition). Each one has its own price; the average above is for the regular version.
Artwork by Ken Sugimori. Some collectors chase every card by the same artist: how to start (in Spanish).
Attacks
Fighting
Crosscounter
If an attack does damage to Rocket's Hitmonchan during your opponent's next turn (even if Rocket's Hitmonchan is Knocked Out), flip a coin. If heads, Rocket's Hitmonchan attacks your opponent's Active Pokémon for double that amount of damage. (If Rocket's Hitmonchan takes 20 damage, it does 40 damage to that Pokémon.)