A CHINESE GILT BRONZE TUNING KEY, QIN ZHEN YAO. Late Warring States Period, 3rd Century BC. With a square socket surmounted by a faceted stem that rises to a bifurcated support on which sits a monkey holding two young. Cast at the top with a seated monkey holding two young, 9cm long. 战国时代 鎏铜坐猴调音器