As I've mentioned on this site many times over the years, I no longer have my Game Paks of the Generation II games, having traded those in (along with my Blue, Yellow, and the first Stadium) in January 2006 when I tried to get out of Pok?mon entirely. Within the next several years after that, I've come to regret that decision, but in hindsight, it's probably a good thing I divested of these games, since sooner or later, the save batteries would have run dry, and they wouldn't be able to hold a save anymore, wiping out potentially years of progress (especially on Silver).