Please check the photos. Instant purchase is welcome. - Pokémon Red, First Generation, Engraving 22 (see photos 3 and later) The battery still had some life, but I cannot guarantee its functionality. - Pokémon Yellow, Pikachu The battery still had some life, but I cannot guarantee its functionality. + Bonus: Pokémon Blue. The battery still had some life, but I cannot guarantee its functionality. All have been tested and confirmed to work. Please understand that these are items stored by a private individual and are vintage. Will be shipped the same day via simple packaging.