Mark McGwire became baseball’s homerun king in 1998 after hitting 70
homeruns in one season. His 70th homerun ball sold the next year for
just over $3 million.
Babe Ruth, an earlier home run king, hit 60 homeruns in 1927. His homerun
ball was donated to the Baseball Hall of Fame.
If Babe Ruth’s ball was valued at $3000 in 1927, and it doubled its value
every 7 years, which ball would be more valuable – Babe Ruth’s or Mark
McGwire’s?