304: Kindergarten magazine, February 1999 Issue
幼稚園雑誌、1999年2月号
As mentioned in this listing.
There’s also a silver border release in the same style that was apparently released the following year.
306: “The Aim to Be a Pokémon Master Game!”
めざせ！ポケモンマスターゲーム
310: That’s just from the metal collection, yeah? There’s a bunch of types available.
Yahoo search