The Declaration of Independence: $477,650
We've all heard of the man who bought a $4 painting at a garage sale, found an original copy of the Declaration of Independence inside, and sold it for $2.4 million. A once-in-a-lifetime story, right? Not so much, actually.
Michael Sparks was visiting a Nashville thrift store, where he bought a candleholder, a set of salt and pepper shakers, and a yellowed print of the Declaration of Independence. Sparks figured the document was a worthless, modern reprint, so he paid the asking price -- $2.48 -- and headed home.
After looking over the document for a few days, he wondered if it might be older than he initially thought. So he hopped on the internet to do some research and soon realized he had purchased one of only 200 official copies of the Declaration of Independence commissioned by John Quincy Adams in 1820. Of those 200, 35 had been found intact; he had number 36.
It took a year for Sparks to have the print authenticated and preserved and then he put it up for auction, netting a final sale price of $477,650.
The salt and pepper shakers, on the other hand, were still worthless.