A woman with long hair holds a glass bowl, examining it to determine whether to purchase it. - Galina Zhigalova/Getty Images Thrifters know that bargains abound at resale shops, tag sales, and antique ...

Thrifters know that bargains abound at resale shops, tag sales, and antique dealers. Usually what you see is what you get, but every now and then, a truly valuable piece is tucked behind something ...