Both first edition Pokmon cards and second printing cards lack the shadow around the border, which appears on later cards, but because they have the logo, the first printing is more usually called first edition
For the remainder of Gen 4, KTCG releases would be separate from Japanese and international ones
You can also scan the QR code on the back of the label with your smartphone
Or have you not thought about the Pokemon TCG since you got a 1st Edition Charizard all those years ago

Abominable Treefolk Absorbing Man Adrix and Nev, Twincasters Aeromunculus Aesi, Tyrant of Gyre Strait Aether Helix Agent's Toolkit Aggressive Biomancy Alaundo the Seer Altered Ego Ambassador Blorpityblorpboop Ant-Man, Colony Commander Ant-Man, Reformed Rogue Applied Biomancy Applied Geometry Arixmethes, Slumbering Isle Arwen Undmiel Assault Zeppelid Auroral Procession Battery Bearer Beast, Erudite Aerialist Beck // Call Beetleform Mage Berta, Wise Extrapolator Bioessence Hydra Biomancer's Familiar Biomantic Mastery Biomass Mutation Biomathematician Biomechan Engineer Bioshift Biovisionary Blue, Loyal Raptor Body of Research Bonny Pall, Clearcutter Bound // Determined Bounding Krasis Bounty of the Luxa Brawn, Amadeus Cho Bred for the Hunt Bring to Light Chitinous Graspling Chrome Host Hulk Clement, the Worrywort Coiling Oracle Cold-Eyed Selkie Colossal Skyturtle Combine Chrysalis Combine Guildmage Cosmic Crucible Croaking Counterpart Cuboid Colony Cytoshape Crdan the Shipwright Decisive Denial Deepfathom Echo Doc Aurlock, Grizzled Genius Don't Worry About It (playtest) Doppelgang Dormant Sliver Double Major Drakewing Krasis Dreamdew Entrancer Drowner of Truth Druneth, Reviver of the Hive Duggan, Private Detective Edric, Spymaster of Trest Elrond of the White Council Elrond, Master of Healing Elusive Krasis Embrace the Paradox Empyreal Voyager

Because charms have three effects to choose from, they tend to be a little smaller in nature, which makes them have a bit of a different feel