The impressive 1st edition base set was printed four times.  It includes many variations, error cards, and corrections as well.  For these stated reasons experts are now forging comparisons between the T206 baseball cards and the original base Pokemon cards.  This is only driving up interest and price!  One of the most interesting errors from the first printing of the English set is the 1st edition “Ghost”  Pikachu card.  The 1st edition stamp is partially printed, but missing the black ink as you can see in the picture.  Other 1st edition stamp errors include grey stamps as well as bold black stamps.  There is another error that has become increasingly popular as well.  The 1st edition rainbow error Dragonair.  Inside of the text box explaining its attack, the “u” in the word number is partially missing.  The rainbow colored background then appears to be flowing through the text.  Arguably the toughest error to come across however is the upside down back error with only a handful known to exist.  Attracting Pokemon fanatics and investors alike, it is safe to say that original base Pokemon cards will hold their value.