1998

Pikachu + Red special sheet

This sheet was included in the October, 1998 issue of the Elementary school magazine in Japan to celebrate the release of pokemon Yellow version.

Folder on the back, included in the sealed version

Pocket monsters the movie sheet

given to people who pre-ordered tickets to the first pokemon movie.

Folder on the back included in the sealed version.

Pocket Pikachu sheet

Distributed to commemorate the release of Pocket Pikachu to subscribers of the Elementary school magazine in Japan.

bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon_Pikachu

Surfing & Flying Pikachu sheet

Distributed sealed in June, 1998.

Possibly as a teaser for the upcoming Pokemon Yellow version a few months later. This is just speculation since the intro of Pokémon Yellow shows a flying and a surfing Pikachu.

Pikachu Genki dechu sheet

Distributed at the World Hobby Fair to celebrate the release of "Pikachu Genki Dechu!" on the Nintendo 64, also known as "Hey you, Pikachu!" in english.

A small sheet to paste these stamps is included. It was meant to be placed in the Pokemon Stadium stock book (see 1998 - Stadium set)