What does Proof FDC mean?
FDC applied to coins means "Fleur Du Coin" and usually refers to
Proof coins. They are made almost exclusively for investors and
collectors.
A coin designated as "FDC" means that it has the best possible
finish and is the finest specimen of the coin possible to make
(when it left the mint).
A Proof FDC coin is made from specially prepared and polished
dies, it may be hand finished and could be made from the same
metals as the equivalent circulating coins or, a variety of
precious metals such as silver, gold or platinum, amongst
others.
Proof FDC coins are always suitably packaged to protect the coin
and the finish, and will be priced well above their face value.