Need help on ID of this coin

[Prosit]

All I know about this one is that it is approximately 21 mm and weighs 3.78g.
It looks like Brass.  My knee jerk reaction is Chinese Cash but I would say that about any coin
that looked similar 

Dale

[villa66]

It looks like a Chinese cash coin, from the 1821-51 reign, with a Board of Revenue mintmark.

v.

[Figleaf]

A great resource for Chinese cash coins is Chinesische Käschmünzen by A. A. Remmelts, usually offered at a very low price. The booklet is in German, but contains little text. It does have a fine collection of line drawings that serve as an excellent visual guide to identification. An alternative is this table, column "reign name". The characters in this column occur on coins in the 12 and 6 o'clock positions. Tables for earlier reigns are available on the same page.

One problem is that Remmelts gives names in Wade-Giles (the older system, still used in Taiwan), while Wikipedia uses Pinyin (the mainland Chinese system). This is Remmelts 195, a cash 1820-1850 in the name of Hsuan Tung (Xuānzōng). His reign name is Tao Kuang (Daoguang).

The Manchu characters on the reverse are here and in KM. They serve as mintmark. In the case of your coin, it is the finance authority. This is one of three economic authorities housed in a park in Beijing. The coins were not struck there, but the responsibility for the coins was theirs.

Even though these coins are common, there are plenty of fakes.

Peter

[Prosit]

All I can say is Thanks!  The knowledge here amazes me.
Dale

[asm]

The knowledge here amazes me.

Not only the knowledge but the willingness to impart it and also digging out information to explain or help makes this forum stand apart. (Sorry for going off topic but I could not hold back)

Amit

[Prosit]

I think this may be my first cast coin that was actually suposed to be cast 
Dale