A method of estimating the age of wood called dendrochronology was used to establish that the panel on which the image was painted dated back to between 1560 and 1592, the National Portrait Gallery in London said.
A method of estimating the age of wood called dendrochronology was used to establish that the panel on which the image was painted dated back to between 1560 and 1592, the National Portrait Gallery in London said.
伦敦国家肖像美术馆指出，一种称为「树木年代学」的树木年轮推估法，被用来确认画像绘板的年代可溯及1560至1592年之间。