Analyzing 500 yen Nickel-brass Coin Latent Image Helical Ridges Micro Dots Micro Stripes
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The figures appear and disappear depending on the positions from which the coin is viewed. This technology applies the phenomenal difference of the brightness between reflective lights derived form incoming and reflective angles of the light.
This technology is used in foreign countries’ coins such as UK 2 pound coin.
The issuance of these coins as a regular coin is really rare.
Helical Ridges

Helical Ridges

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The edge of 500 yen coin introduces the first special technology of the world in the field of mass-production. Helical Ridges (helically milled edge) strengthen the resistance against counterfeiting.

The edge of 500 yen Nickel-brass Coin is helically milled for the first time in the field of mass-production.
Micro Dots

Micro Dots

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We are challenging to the limit of micro-processing, To combat counterfeit coin by impressing super-fine-micro dot
technology is apllied within paulownia leaves at the center of the coin.
The state of the art super-fine-micro-processing technology totally heighten the anti-counterfeiting measures.
Micro Stripes

Micro Stripes

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Micro lines (stripes) are thinner than human hair. Micro stripes or micro lines are applied vertically against the background of Chinese characters in upper and lower parts of the coin along with the arrangements of the characters.