How to identify Fake Coin?

Here is a study on Fake Coin which produced to look alike genuine coin. Even the color of the "Patina" is fake color.

The answer can be easily trace through a 10 times or more magnifying glass/ scope test.

Where did it goes wrong?

1st flaw: The design of the coin ( Wu-Zhu) : The character writing was too vivid and neatly written without flaw and irregularities. It is not possible to acheived such neat standard in the period of the Han dynasty.

2nd flaw: The color of the Patina is not natural as compare to the genuine patina growth. The fake patina color is "dim and dead" color as compare to the genuine patina color which is sharp, clear and lively color tones.

3rd flaw : The coin molding is also too neat which is not possible in the Han period.