The Obama State Department and US Customs have imposed broad import restrictions on most Greek coins and other cultural goods. See http://www.gpo.gov/fdsys/pkg/FR-2011-12-01/html/2011-30905.htm
The restrictions on coins are exceptionally broad, but seem to exclude large denomination trade coins:
Coins�Many of the mints of the
listed coins can be found in B.V. Head,
Historia Numorum: A Manual of Greek
Numismatics (London, 1911) and C.M.
Kraay, Archaic and Classical Greek
Coins (London, 1976). Many of the
Roman provincial mints in Greece are
listed in A. Burnett et al., Roman
Provincial Coinage I: From the Death of
Caesar to the Death of Vitellius (44 BC�
AD 69) (London, 1992) and id., Roman
Provincial Coinage II: From Vespasian
to Domitian (AD 69�96) (London, 1999).
a. Greek Bronze Coins�Struck by
city-states, leagues, and kingdoms that
operated in territory of the modern
Greek state (including the ancient
territories of the Peloponnese, Central
Greece, Thessaly, Epirus, Crete and
those parts of the territories of ancient
Macedonia, Thrace and the Aegean
islands that lay within the boundaries of
the modern Greek state). Approximate
date: 5th century B.C. to late 1st century
B.C.
b. Greek Silver Coins�This category
includes the small denomination coins
of the city-states of Aegina, Athens, and
Corinth, and the Kingdom of Macedonia
under Philip II and Alexander the Great.
Such coins weigh less than
approximately 10 grams and are known
as obols, diobols, triobols,
hemidrachms, and drachms. Also
included are all denominations of coins
struck by the other city-states, leagues,
and kingdoms that operated in the
territory of the modern Greek state
(including the ancient territories of the
Peloponnese, Central Greece, Thessaly,
Epirus, Crete, and those parts of the
territories of ancient Macedonia, Thrace
and the Aegean islands that lie within
the boundaries of the modern Greek
state). Approximate date: 6th century
B.C. to late 1st century B.C.
c. Roman Coins Struck in Greece�In
silver and bronze, struck at Roman and
Roman provincial mints that operated in
the territory of the modern Greek state
(including the ancient territories of the
Peloponnese, Central Greece, Thessaly,
Epirus, Crete, and those parts of the
territories of ancient Macedonia, Thrace
and the Aegean islands that lie within
the boundaries of the modern Greek
state). Approximate date: late 2nd
century B.C. to 3rd century A.D.
Obviously, the obdurate bureaucracy could care less that over 70% of the public comments received by CPAC opposed these restrictions and that the actual support for them is limited to archaeological fanatics who hold that the only legitimate cultural exchange is a museum loan.
It is also ironic that these restrictions provide for the repatriation of any coins seized by US Customs to the bankrupt Greek state, which has no money to care for major cultural sites, let alone for the thousands upon thousands of ancient Greek coins already within State collections.
Again, more proof that the Obama administration is anti-small business and pro-government regulation, despite all the claims to the contrary.