Military helmet, period of the Warring Kingdoms. China, 5th century B.C.-221 B.C. Bronze. Measures: 14 x 13,5 cm. Chinese bronze helmet dated to the period of the Warring Kingdoms, which is in very good state of preservation. It is an example of the military technological evolution of classical antiquity. The name Combatant Kingdoms period comes from the Record of the Combatant Kingdoms compiled in the early years of the Han dynasty. Dimensions 14 x 13,5 cm.