Are there US Customs duties on coins???

I am in the middle of purchasing a Double Eagle from a seller in Canada. Does the US Customs assess duties on coins purchased outside the country? Does anyone know anything about this? I suppose I should have checked beforehand, but seller has perfect feedback and has sold to many in the US, the issue never even crossed my mind...
TIA,
TIA,
mbogoman
Asesabi Lutho
0
Comments
believe that there is duty coming here.
bob
"Everything is on its way to somewhere. Everything." - George Malley, Phenomenon
http://www.american-legacy-coins.com
Oh- wait...
Gold coins, medals, and bullion may be brought into the U.S. However, under regulations administered by the Office of Foreign Assets Control, such items originating in or brought from, Cuba, Iran, and Sudan* are prohibited entry.
Copies of gold coins are prohibited if not properly marked by the country of issuance. The importation of counterfeit coins is prohibited.
There is no duty on gold coins, medals or bullion, however, if the value of the gold coins is over $10,000, it must be declared to a CBP officer and must be reported on the FinCEN 105 form.
<< <i>No duty coming in, but a big one going out >>
How so?