Discover your old coin value. All major coin series from Half Cents to Gold are rising in value. Match your coins to the Grading images and value charts. Do you have valuable coins? Do you know what your coin's worth? See U.S. coin prices, with values for the most common dates of all U.S. coins. Values of UK Coins. Index to Coin Value Pages by Denomination . The value pages do not give estimated values for coins in worse than Fine condition. Four Pence · Thirty Pence or Halfcrown · Three Pence · 5s, Quarter Guinea and 5/6.