The card was also released with slightly different artwork in Japan as a special card through the JR Stamp Rally in September 1997. Those taking part in the Stamp Rally were tasked to collect stamps by visiting participating stations as detailed in special stamp books available to buy at a number of those stations. Those that collected the required number of stamps were awarded a two-card set that included the variant Surfing Pikachu and Mew. This variant is commonly known as the Mt. Fuji Surfing Pikachu, in reference to the background illustration. The JR rally version is printed on regular card stock and is considerably rarer than its CoroCoro counterpart. In contrast, the CoroCoro version is printed on glossy card stock and lacks the mountain and train illustrations. This variant card was never released in English.
Although the plural form of any Pokémon's name is thought to be the same as the singular form, the Wizards Promo print of this card says "Pikachus" as opposed to "Pikachu." This is also seen in many cards from the Team Rocket expansion. This card's odd wording was fixed in the Rising Rivals print.
Despite popular belief, this card is not actually rare as you can find some online that have extremely low prices for a card.