Need Help If It Is Real And Worth? Chinese Guangxu Coin?

Hello, asianarts, and welcome!

These dollars are so widely counterfeited, there's always a bigger chance to get a fake than a genuine piece. I myself have three pretty skillful forgeries (looking better than yours). Your particular item was never issued for circulation, and only a handful of patterns were struck at the Heaton mint in Birmingham, UK, with the value in 5 figures.

1st thing to check is any inconsistencies in the legend. Oftentimes the counterfeiters don't bother get it right thinking it's all "Greek" to the consumers anyway. Your article mostly checks out on that one (I don't particularly like the mint mark in the center of the top pic).
2nd thing to check is the allignment, the forgers usually don't care about this kind of thing and the two sides are often upset of each other (turned by an odd angle).
3rd thing is the magnetism. The coin is supposed to be silver, so it wouldn't stick to a magnet. Counterfeits often do.
4th thing is to check the weight. It should weigh exactly "7 mace and 2 candareens" or 26.10 grams. Fakes are often underweight.
And, of course, the overall appearance and quality. Although some counterfeited coins are crude to begin with, your piece should be sharp (produced by Brits) and uncirculated, instead it looks "mushy".

At least $25,000! (according to my catalog)

Bringing it to a local dealer/specialist to examine in hand, sending it to a Third Party Coin Grading company. But I wouldn't get my hopes too high ...