From Bulbapedia, the community-driven Pokémon encyclopedia.
The TV Tokyo Vancouver 2010 Winter Olympics Pikachu Pin, nicknamed the Pika Pin, is a lapel pin distributed by TV Tokyo at the Vancouver 2010 Winter Olympics. It was one of the most wanted pins which collectors tried to obtain during the games.
The pin, about an inch wide, features Pikachu along with five maple leaves which are the colors of the Olympic rings, the Vancouver 2010 script logo, the TV Tokyo logo, and the flag of Japan. They have sold on online sites for nearly $200USD.