1830-A NGC MS 62 France 1/4 Franc Die Clash Mint Error Charles X Paris Mint Silver Coin (20012001C)Mint State Uncirculated France silver 1 4 franc coin. Struck for Charles X at the Paris Mint (A mint mark). Significant die clash mint error noted on obverse. The reverse design has been transferred to the obverse upside down and retrograde. The F, 4 and portions of the shield and crown are very prominent. A die clash coin error occurs when the obverse and reverse dies come together without a coin between them. This causes design transfer to the dies