Legendary Collection is a set in the Other series. It was released on 24 May 2002. The printed size is 110, and the checklist is the same length. Machamp is 15/110, in position 15 of 110 on this checklist. Before it is 14 Jolteon, and after it is 16 Muk. The listed rarity is Rare Holo.
Machamp is a Stage 2 Fighting Pokémon with 100 HP. The card lists level 67. In the Pokédex this is Machamp (#068), generation 1 (Kanto). The card says it evolves from Machoke. In this catalog that name is Machoke (#067).
Ken Sugimori illustrated this card. The same name is on 1,112 other cards in the catalog.
Machamp (#068) has 48 other cards in the catalog. Those other cards are in 29 sets. The other printings with a release date run from 1999 to 2023. The earliest other card is Machamp 8/102 in Base (1999). Both list 100 HP. Both list the rarity Rare Holo. 44 other cards of Machamp list a different HP.
Strikes Back is listed as Pokémon Power. Whenever your opponent's attack damages Machamp (even if Machamp is Knocked Out), this power does 10 damage to the attacking Pokémon. (Don't apply Weakness and Resistance.) This power can't be used if Machamp is already affected by a Special Condition when your opponent attacks. The attack Seismic Toss lists 60 damage. The cost is Fighting, Fighting, Fighting, Colorless. Weakness is Psychic ×2. Retreat cost is 3. The flavor text reads "Using its amazing muscles, it throws powerful punches that can knock its victim clear over the horizon."
I keep a set binder for Legendary Collection, meant to hold every card of that set. This card is one slot in the Legendary Collection set binder. A generation binder holds one card of each species. Machamp can fill a slot in Generation 1 binder (Kanto). I still need this card.