It’s every tag-sale shopper’s fantasy: Buy a $10 painting at a garage sale or flea market because you like the frame, find an original copy of the Declaration of Independence behind the amateur artwork in front, then sell rare document for $1,000,000. Or in the case of a New York family this week, make that a rare “Ding” bowl of the Northern Song Dynasty. Purchased for $3 at a yard sale in 2007, it sold at Sotheby’s auction house this week for, drumroll, please, $2,225,000. The family displayed the bowl on their mantle until becoming curious about it and consulting experts. Read more about the lucky find here.