One coin, for example, ended up selling for more than $4,000. Coins with error and proof features are more expensive. There are, however, more expensive options available, such as those with MS65 and above high grades, which can be valued at $100. Answer: The value of a 1973 half dollar ranges from $0.50 to $1 in circulated condition and from $0 to $3 in uncirculated condition.