For the longest time I thought the GB stood for Great Britain, the only instance I ever saw it was the Meowth card which came bundled with the TCG GB Game, I knew we got a different card from the one bundled with the Japanese one, so I had always assumed this just happened to be the UK variant, up until I saw a Japanese card with the GB symbol and the illusion was broken.
Is there a definitive list out there or has everything that has been mentioned thus far the entirety?
Yeah exactly. Maneuvering that Unnumbered promotional cards list isn’t easy if you don’t already have some knowledge on it.
For example, the Dark Ivysaur & Dark Venusaur have no correlation to any game boy promo on the the Promotion tab next to the name. All they say is “Pokémon Card Trainers Vol. 10 (March 2001)”
There also exist two cards that were previously gameboy game exclusive artwork and got an actual printed card in the web series. The two are Tangela and Electrode. Though not strictly GB promos like the ones with the GB logo, all of those gameboy promos feature artwork that was exclusive to the gameboy game just like the two web reprints so I’d sort of count them as well haha.