It depends which one you have. Because of the high volume of cards made in the early nineties, rookie cards from that era are usually pretty cheap to come by, sometimes as little as ten dollars. The most valuable one is the one with his last name spelled wrong.
According to a professional card trading website a Brett Favre rookie card (depending on brand) can range from 2 dollars to about 9. The top brand is Upper Deck.
Most likely worth a few hundred dollars. However, this solely depends on if the card is in mint condition, also smell, bends, coloring,All of these things matter in it's price.
