Help Identifying Chinese Coins (2)

Cash coins, even when of the same issue and mint, are by no means uniform, owing to the nature of the casting process.

The Chinese lettering on the obverse is the same, which gives the reign title as Ch'ien Lung, 1736-1795. Owing to the length of the reign, the cash of this issue are plentiful, although I believe I read somewhere that they were intermittently produced during the whole remainder of the dynasty.

The Manchu lettering on the reverse, which gives us the name of the mint, differs. Incidentally, you have these coins upside-down. Referring to my copy of Schjöth, I believe you have, on the right Yunnan province, and on the left, Kuei-lin in Kuangsi province. These are less common than the usual "Board of Works" and "Board of Revenue" issues.

The larger coin has, unfortunately, been damaged by soldering. Cash coins, both genuine and replica, are often made into good-luck-charm amulets, with different designs for different purposes. A common design is the "coin sword", where coins are sewn together - or perhaps in this case, soldered together - in the shape of a sword.

qian long, bao guang mint (left), qian long Bao Yun mint (right)

both are authentic, but worthless, the bao guang coin looks like a private issue to me.