nice finds. have to love the condition o western relics. the Chinese coin is a 'common' find is west coast camps going all the way to the California Gold Rush. I love finding them. They are always old. I forget the exact year on yours but it is circa 1723-1796 give or take a year or two.
I averaged about one a month in western sites so they are by no means a 'easy' dig. There is a bigger older style that shows up less. I have found only 3 of the older style. it is super rare to find anything other than these two types.
I do not read Chinese but it should have a mint mark location. Nice finds.