Sorry, but I'm not gonna research your Chinese dollars! They're all empire from different provinces except one general issue
I got these from an older gentleman that bought them from a coin dealer in the 80s he said. They weigh about 26.60 to 26.70 grams which I think is correct. I found a website that had a picture of a verified example and one of my coi s matched the symbols on the front and back, but I'm not sure. Thanks for the info on the Belize coins, I wasnt sure they had decent gold content but it looks like they do.