So I am generally a US coin collector, but recently came across these. I believe the coin by itself is Guangxu (Guangdong mint Y#190?), but am not 100% sure. Any help identifying and advising potential value would be very much appreciated. Many thanks,
You are correct about the one coin, it is of the Guangxu emperor, Guangdong mint, machine-struck, Y#190. I'm not sure what the other four are, but they don't seem to be official coins (note how the inscription doesn't include the character Bao (coin) anywhere), I think they're tokens or amulets of some type. The Guangxu coin is very common and is a "junk box" coin, worth maybe a dollar or two. Hope this helps.
It looks like the other four coins say "光明世界" which means "a bright world." It isn't an official coin, so I'm guessing a token by a religious organization.