Jim Elroy learned about a nuclear physicist in France who might hold the key to unlocking the true age of the wine inside the Jefferson Bottles. The physicist, Philippe Hubert, is an expert in dating objects by detecting levels of cesium-137, a radioactive isotope of the element that didn't exist before the explosion of the first atomic bombs over Hiroshima and Nagasaki in 1945. If the Jefferson Bottles are as old as Rodenstock claimed they were, the grapes used to make the wine should not contain any cesium-137. Hubert had used this method to debunk several other supposedly ancient wines [source: Keefe].
For Koch, though, cesium-137 wasn't the smoking gun. The test showed no radioactive elements, meaning the wine was produced before 1945. But 160 years before 1945? The killer clue turned out to be on the bottle, not in it. Consulting glass and tool experts, Elroy concluded that the etching of "Th.J" on the bottles could only have been done by modern dentist's drills, not 18th-century copper wheels [source: Keefe]. Koch sued Rodenstock, but the German citizen claimed immunity from U.S. prosecution and continues to collect and sell wine as of 2014.
High-profile con men aren't the only wine fraudsters in on the game. Knockoff outfits in China are selling cases of counterfeit product supposedly from high-end California wineries, and legions of smaller con artists are flooding the auction circuit with fakes. One wine expert believes that 80 percent of pre-1980 Burgundies sold at auction are counterfeit [source: Steinberger].
To protect their investment and calm jittery buyers, some wineries are investing in technology that authenticates their bottles. A company called Prooftag sells a product that creates a one-of-a-kind "bubble seal" — like a fingerprint — on the neck of the bottle [source: Gannon]. The bubble pattern, along with a scannable QR code, tracks the bottle back to the winery. Another company, Applied DNA Sciences, can embed invisible, encrypted DNA tags into the wine's label. The DNA information cannot be replicated or even detected by counterfeiters [source: ADNAS].
Further, the California label Opus One has invested in a tamper-proof capsule that changes color once the bottle has been opened. There's also a chip on the back label that can be scanned with a smartphone to give information on the wine as well as its precise location. [source: Stephens].
But all of this new technology isn't much use to collectors like Koch, who crave bottles from the pre-digital age. For his part, the retired billionaire doesn't dwell much on being duped. As Koch said in a 2007 article about the Jefferson Bottles in The New Yorker, "I used to brag that I got the Thomas Jefferson wines. Now I get to brag that I have the fake Thomas Jefferson wines."