(PD) - A New York wine collector has been convicted of two counts of fraud for selling wine bottles that were purportedly rare and pricey, but which were really cheap wines with fraudulent labels.

The case against Rudy Kurniawan, who posed as a wine collector and expert, followed authorities' discovery of numerous wine labels and bottling equipment in his home.

Wine fraud isn't rare. The fact that it happened in the United States is. Most cases of wine fraud over the decades have occurred largely in Europe.

Among the few U.S. cases were three convictions for grape-switching in the early 1990s, when Zinfandel was in short supply (to make white Zin) and other grapes were sold as Zinfandel.

The schemers in most fraud cases often assume that wine is hard to understand, and they can simply get away with cheating.

It happened in Burgundy in the 1980s. A winemaker by the name of Bernard Grivelet was charged with bottling fine wine in 750-milliliter bottles, but selling larger bottlings of the “same” wine, such as magnums and double-magnums, that contained lower-quality wine.

Grivelet must have figured no one would open a magnum until it had been aged for at least a decade; by that time he'd be long gone. Unfortunately, a wine expert did open a magnum and realized it wasn't what it said on the label. Soon Grivelet wasn't making wine any more.

In the late 1990s, police in Beaune, the capital of France's Burgundy district, arrested 10 persons and charged they had sold some famed wines that actually were blended with cheap wine.