Conversation so far:
Did he own any wine from TJ's vineyard?
In 2005, U.S.
art and wine collector Bill Koch, who had bought some of the bottles attributed to Thomas Jefferson.
How does this all relate to Hardy?
Inquiries at Chicago Wine Company and Farr Vintners came up with the result that all four of Koch's bottles originated with Rodenstock.
So Hardy sold them to Koch.For how much?
a U.S.
wine auction house (Chicago Wine Company) and a UK rare wine dealer (Farr Vintners), and paid a total of about 500,000 U.S.
dollars for them.
Were they altered ?
Koch hired a retired Federal Bureau of Investigation (FBI) agent to form a team to start private investigations into Rodenstock's sales of wine.
What did the team find?
Koch alleges that the engravings were made with an electric power tool, which would not have been possible in the eighteenth century and would indicate modern forgery.

Question: When was this investigation launched?
Self-contained rewrite: When was private investigation launched?