Hello, the visual inspection is true. I have the American version of Heart Gold, Platinum, White, and Black 2 genuine cards, but they are not around now, so I can only rely on memory to distinguish the appearance

My judgment is based on the shape of the font on the back, the color of the gold finger, the small dot in the upper right corner, and the thickness of the E on the front. They are not much different from my cassette, and I didn’t find anything unusual

As for what you said It can only be seen through strong light. It may be because the cassette is relatively old and the light transmittance is not very good. My heart gold also has this problem, but the Asia-Pacific American version such as platinum does not have this problem because it is relatively new; as for whether it shakes or not Regarding the sound problem, if I remember correctly, it seems to be black and white. The black and white 2 cassette has a built-in infrared module. This module can be shaken, but Heart Gold and Soul Silver does not have this module.

If you are not sure yet, you can Try to use this Soul Silver to link with your White 2. If the linkage is successful 99% is the correct card

If you are still not sure in the end, you can buy an AR shooting with 3DS and use Soul Silver to link it. If successful, it will undoubtedly be genuine. Or send your question to the Pokemon Bar or Pokemon Cassette Bar. These two bars have more experts who can identify cartridges

I hope they can help you