Korea Mun [решено]

So this is Korean. Closest comparison to the marks on the reverse is this one:

https://en.numista.com/catalogue/pieces200941.html

But it doesn't appear to be an exact match. Looks bronze. 4.2g, 24mm diameter, 1.25mm thickness. Checking to see if anyone here has a better comparison or match.

Your Sangpyeong 1 mun has the following mint marks on the reverse:

Hun
Pal
Saeng

"Hun" stands for Military Training Command (mint).
"Pal", Hanja for the number eight (some kind of serial numbers).
"Saeng", Hanja for "produce" or 'birth", is part of a mint mark system. I saw some online sources indicate this word as representing the 1832 mint year.

Just so happened that the British Museum got the same variant as yours.
https://www.britishmuseum.org/collection/object/C_1908-0113-17

Very informative. Thank you greatly.

I presume it's a fairly common piece or is it more sought after if the British Museum keeps a record?

Цитата: "Creole68W"​I presume it's a fairly common piece or is it more sought after if the British Museum keeps a record?

I am unsure about that. I think I saw the "Hun" mint variants more often amongst the Sangpyeong Tongbo, especially the 1 mun version, so maybe your example is a common one. Still, Korean cash coins are probably less common in general comparing to its neighboring countries.

Thanks for all your assistance much more informing than expected when I created this post.

No problem, Creole68W. In fact, I have one last piece of information for you. I just remembered that I have the Standard Catalog of World Coins, 1801-1900 (8th) with me, and the catalog actually attributed this particular coin series as minted in 1857, under KM#469 (page 881).
That will be all for now.