A woman who bought a glass vase for $3.99 at a local Goodwill charity shop has seen the piece auctioned off for more than $100,000 after it turned out to be a rare and valuable piece of Italian glassware.

Jessica Vincent had bought the item at a Goodwill thrift store in Hanover county, Virginia, and had an inkling that it might have been worth a little more than was usual, she told the New York Times.

“I had a sense that it might be a $1,000 or $2,000 piece, but I had no clue how good it actually was until I did a little bit more research,” she told the paper after noticing a small ‘M’ on its bottom which she suspected might stand for Murano, an Italian island near Venice famed for glasswork.