[Answer] The first bronze mirror is the mirror of the God beast bureau in the Han Dynasty (also called the mirror of the God beast rules in the Han Dynasty). The outer ring is decorated with four gods, which is complete, but the mud rust is heavy, with a diameter of about 12 to 13 cm, and the price is about 5000 yuan. The second bronze mirror, a mirror with four breasts and eight birds in Han Dynasty, has big cracks and heavy mud rust, with a diameter of about 8 cm and a price of about 1000 yuan.
[digression] These two kinds of bronze mirrors are from the Han Dynasty. How could it be from Sui and Tang Dynasties? This is common sense.