1828 Indochinese Piastre?

Sorry, no, that is some sort of reproduction/fantasy piece. The year 1828 is impossible, French Indochina did not exist until 1887.

But to Coin Community!

I'd value it at a few bucks I'd pay for it.
I collect ridiculous pieces like this, make photos, weights & measures.
Then add pages to the albums.
I think they come from China.
Some are very good but many of them are just dumb.

Nice catch on the designer and date- I never thought to put those two together. What made you think about how old the designer would have been in that date?
One obvious one I had was QE II on one of those dated 1877.

I saw the designer's name, written in typically bold French style, and I knew that "1828" was long before the coins were actually issued, so presumably long before they were designed. So I looked up Wikipedia for the designer's birthdate. "1828 was before the designer was born" would have been funnier for me to say, but alas, not quite true.

Regarding the commonality of "wrong date fakes", there's an amusing story from a friend of mine. He was browsing the street markets somewhere in Asia, and pointed out to a street vendor that the date on one of his "coins" was impossible - I believe it was that Andrew and Fergie Wedding crown with "1086" for the date instead of "1986". The vendor then immediately launched into a sales spiel about how it must be a rare mint error, and doubled his price. I think the logic they are hoping for is something like "nobody could possibly be so stupid as to deliberately put a wrong date on a coin, therefore this can only have been done accidentally and must therefore be a mint error".