When it comes to standing liberty quarters, specimens that are in mint condition are typically the most valuable. Any coin which is damaged, marked, scratched, or scuffed will usually suffer a serious reduction in value compared to a coin in finer form. It is also important to realize that value is not determined by age alone. Everyone knows that old and rare coins are desirable, but there is more than just age and scarcity that go into determining a coin's value to collectors. When thinking about market value for a particular coin, always try to assess the demand.