Would Like Information On This Coin

Replica of a cash coin, Shun-chi,1644-61, Board of Revenue Mint

Here's a version of the replica / imitation coin:

The above posters are correct; it's not a coin, but a mass-produced machine-struck "Feng Shui" replica of a Chinese cash coin. They usually use them in groups and bundles, tied together in groups of three or in auspicious shapes like swords and circles to make anti-evil-spirit charms.

Genuine cash coins were cast in sand moulds, giving their background surfaces a porous appearance. See all the "dots" in the obverse background? Those are intended to mimic the sandy porosity of the genuine coin.

While I'm not overly familiar with Feng Shui doctrine, it appears from a little Googling - and from the sheer number of these replicas being made - that you don't actually need 400-year-old coins in your coin swords and coin charms for the magic to work; the spirits are fooled by modern replicas. Modern replicas may even work better, because it's apparently important that the coins in these charms all be the exact same size, which can be hard to attain for genuine coins. Furthermore, genuine old coins might be contaminated (already full of trapped evil spirits?) and would need "cleansing" before being re-used in new charms. Of course, it's the people selling the replicas that are saying you need to keep buying fresh coins.