"No.1 scholar" and "No.1 scholar" bronze mirror should be Song mirror, but there is no allusion.
If it is bronze, it can basically be judged to be Song, Yuan or early Ming Dynasty, and brass only appeared in the middle and late Ming Dynasty.
The overall style of bronze mirror is simple and rich, but it is not exquisite. On the back of bronze mirrors in Qing dynasty, there were many auspicious characters such as "No.1 scholar" or flower-and-bird ornamentation, and the diameter of bronze mirrors was much smaller. There is no wide-brimmed style in bronze mirror casting in Qing dynasty, which can basically rule out the possibility of bronze mirror casting in Qing dynasty.