Alternate Stickers for Ruby / Sapphire.
It took a while, but I finally managed to track down all of these vintage sticker variants exclusive to Ruby and Sapphire in acceptable condition.
The stickers with the English text come from a mini-sticker album that got released in Japan (I'm pretty sure that there is one of these little albums for each game after gen 3). They come with all sorts of stickers, like for each pokemon in that gen, pokeballs, gym leaders and so on.
I managed to buy from a seller both albums with the cart stickers still unused, but my Japanese Sapphire copy had no sticker either, so I had to put it in. Tracking down the carts isn't too difficult on sites like Mercari or Yahoo auctions, same thing with the albums, the hard thing is finding them in decent condition or with the stickers unused.
The stickers with the Japanese logo come from the Coro Coro "Pokemon Official Strategy Guide" and they are called "dress up stickers". It's as it sounds, a strategy guide for Ruby / Sapphire, but it also includes a small sticker sheet for the GBA and one sticker for each of the game carts.
I love Ken Sugimori's original art, and small memorabilia like this is great to collect. I'm also fairly certain that there is one more sticker that has the gen 3 starters, but I'm unsure where it comes from, maybe I'll find a cart with it someday.
Anyway I just wanted to share these in case there were more Sugimori enthusiasts around here, enjoy the little trivia.