- This unique study identifies and classifies Imperial reign marks on
Chinese porcelain from the Qing to the Ming periodsThis study identifies
and classifies Imperial reign marks on Chinese porcelain from the Ming
to the Qing dynasties. Working on the theory that only a few artists
created these marks, Christer Löfgren, a former antiquities dealer in
Chinese porcelain, created a database with thousands of so-called 'mark
and period' brands. This survey, 15 years in the making, covers all the
Ming emperors, from the 15th century to the last emperor during the Qing
period, including Hongxian, up until 1920.