The dealer was referring to the ANA World's Fair of Money
, a massive annual show sponsored by the American Numismatic Association. Hundreds of dealers and many world mints will be present, in addition to a mind blowing coin display- 1849 and 1933 Double Eagles, $100,000 bills, a 1787 Brasher Doubloon, three of the five known 1913 Liberty nickels
, and many others.
I would be there except for the fact that I live 2000 miles away