Circulated Condition: A regular 2001 five pence coin found in everyday change has no significant value to a collector beyond its 5p face value. Millions of these were minted for general use.
The inscription you mention, "D.G. REG. F.D.", is a standard part of the effigy on the obverse (front) side of UK coinage featuring Queen Elizabeth II. It is an abbreviation of the Latin phrase "Dei Gratia Regina, Fidei Defensor", which translates to "By the Grace of God, Queen, Defender of the Faith".
(BRILLIANT UNC) BRITISH 2001 ELIZABETH II FIVE PENCE 5p ...
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