The value of a pence coin stamped with the phrase "new pence" is typically worth between 10 pence and 2 pounds, if in mint or proof condition. The 1983 new pence error coin is worth approximately 400 pounds or more in perfect condition with full luster.
Most new pence coins are worth the face value of the coin. The new pence mark on coins was typical for pence coins minted between 1971 and 1981. New pence coins from 1983 were minted as commemorative coins and distributed as a part of a set. These coins were minted in brilliant, uncirculated quality, a higher standard than coins intended for circulation.