Here is what Wikipedia says:
Each set also had two sixty-three card starter decks containing two copies of a promotional face card, three random rares and sixty fixed commons/uncommons (sets 5 and 6 had sixty card starters with three alternate image rares in place of the random rares).
What is the normal amount of uncommon cards per starter? I've checked 2 starters, appart from the sites, one had 8 uncommon cards, the other one had 3.