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.
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)
"4 seasons" Pikachu sheet
This sheet was included in the January, 1998 issue of the Elementary school magazine in Japan.
It was also a promotion of the "Hey you, Pikachu!" game for the nintendo 64.
Kabuki Sheet
Artwork made by Mitsuhiro Arita
It is made in the style of traditional Japanese woodblock print art (Ukiyo-e).
Distributed in a Pokemon Wonderland magazine with its stock file.
Stock file front
Stock file back
Farfetch'd on the moon
This is one of the more rare sheets in my experience.
Top artwork was made by Mitsuhiro Arita.
Stock file Front
Stock file back
New year's sheet - Growlithe
New Year's sheet - Arcanine
New Year's sheet - Electabuzz
The New Year's sheets have a golden gloss