It's no secret that mint condition liberty walking half dollars are worth a lot more than ones in fair or poor condition. A damaged coin is much less attractive to a buyer than one which is without blemishes, which can command a substantial premium. You must realize that more than age goes into determining the worth of a given coin. In the estimation of a collector, many factors besides just age and rarity go into deciding upon a coin's market value. When thinking about market value for a particular coin, always try to assess the demand.