Hi pojo and everyone who reads this. To tell if you have an error trading card, identify the suspected error. Next compare your card to the same cards of other kids. For example if every card of other kids' has an identical error, it is not usually considered worthwhile to correct (for example the bulbasaur double length error). Thirdly, find a copy of your card without the error. This will provide positive identification of an error card. To avoid mis-identifying an error card, look at the dates on the bottom of the cards. If one says "1995, 97, 98" and the other says "1995, 97, 98, 99" then it is just a different version of the card printed in a different year. Usually the cards that have darker shadows and bolder print were printed in 99 and the cards with lighter print were printed in 98. The end. :> Questions and/or comments mail to Joey Eno (Angeleno@compuserve.com)