Hello and welcome.

Quote:
The characters on the reverse translate to "5 yuan", instead of the standard 1 yuan fat man dollar. I suspect that means it's not a genuine piece.
Zurie is correct, it says "5 yuan", or "5 dollars". China never made a silver 5 dollar coin. A "genuine silver 5 dollar coin", if such a thing had ever existed in 1914 (the date this coin shows), would necessarily have had to weigh five times what a silver dollar weighed (or about 130 grams, or a bit over 4 troy ounces), and I can guarantee you that this piece is nowhere near that large and heavy.
So yes, it's technically not even "fake", since there are no genuine coins anything like it. Which also explains why you haven't had much luck finding anything similar in the references. What we have here is a "fantasy". We have seen similar fantasies posted before;
Here's one posted in 2015, much the same design but dated "Year 5" not "Year 3". There's another, but Year 10, in
this group of fakes posted in 2020.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis