The Emperor's name was Si Zong, Chong Zhen was the reign title.
There are several reverse designs. The top of the reverse is probably blank but could be a small circle. (It's probably not a dot because the Tong on the obverse only has one dot.)
If the reverse is blank: KM#55.1. Hartill 20.235 or 20.248 depending on the size of the coin. Probably .248.
There are several reverse designs. The top of the reverse is probably blank but could be a small circle. (It's probably not a dot because the Tong on the obverse only has one dot.)
If the reverse is blank: KM#55.1. Hartill 20.235 or 20.248 depending on the size of the coin. Probably .248.






















