Before you drop that china off at the thrift store, take a sec to flip it over and give it a closer look. Knowing how to spot valuable antique china marks and identify the patterns you have can ...

Total auction sales at both Sotheby’s and arch-rival Christie’s are put at $5.7 billion each for 2011, which adds up to $11.4 billion, or about 35 percent of the global auction art trade. China’s ...