Postage stamps and postal history of Costa Rica change in currency from "Reales" to the new Pesos and "Centavos", the issue of 1863 was surcharged with new values for postal use: 1 Centavos, 2 Centavos, 5 Centavos (all over the Medio Real stamp), 10 Centavos (over Dos Reales) and 20 Centavos (over Cuatro Reales). The 5, 10 and 20 Centavos were also surcharged "U.P.U." Costa Rican stamps were issued overprinted "Guanacaste" in 1885-89 following war with Nicaragua over the sovereignty of Guanacaste. The first issue in the new "Colón" currency was dated 1900 and put into circulation in 1901. It consists of ten stamps with values ranging from
Pokémon Gold and Silver tracker format, converted to MIDI data and converted again to the Game Boy Color. The games were announced for release in Japan in November 1999 and at the same time a U.S. release date was estimated for September 2000. Nintendo announced the release of the Pocket Pikachu Color, a full-color portable digital pet similar to the one released the year before. The unit was made compatible with "Gold" and "Silver", allowing the transfer of in-game currency known as "watt points". Pocket Pikachu Color was slated for release in Japan on November 21, 1999, the same day as the release of