The condition of ancient coins directly affects its worth, so keep that in mind when adding to your collection. In almost all cases a coin which appears to be in excellent condition will be significantly more collectable than one which is damaged. More factors than just age determine the value of a coin to collectors. Of course age and rarity make a coin more valuable to collectors, but they aren't the only factors that matter. When thinking about market value for a particular coin, always try to assess the demand.