Here are 6 Chinese cash coins which I'd really appreciate some help to ID.

The numbers correspond to the obverse/reverse of each coin, as well as the specs listed below (if that helps) Thanks!

Number, weight in grams, diameter in mm
1. 4.38, 24
2. 3.97, 23.5
3. 2.98, 22.5
4. 3.85, 24
5. 4.08, 22.5
6. 4.2, 22
Photos--note, colors are not true; they're adjusted to lend clarity to the inscriptions.

