PART V. Planchet Errors:
Double Denomination Errors:
Dual Country:
Different Year
Definition: This error occurs when a coin carrying the design of one country is struck a second time by a coinage press striking coins for another country that also happen to carry a later date.
The double denomination error shown below consists of a 1964 Kennedy half dollar design that was struck over an off-center 1963 Philippines 10 centavos. The U.S. Mint was striking coins for the Philippines during this time period. Unlike most dual country/dual year/double-denomination errors, there is every likelihood that this was an accidental occurrence.