That’s because VISA’s identification mark has been upgraded. It was the first to place the laser anti-counterfeiting dove and VISA logo on the front of the card, and the VISA logo is a thin blue strip on a white background with blue letters and an orange strip. This can be called the "first generation logo".

Later, for the sake of aesthetics, VISA designed a narrower VISA logo, canceled the blue and orange strips, and only used blue letters on a white background. At the same time, the laser anti-counterfeiting dove on the front of the card was also cancelled. Instead, new technology was used to combine the laser anti-counterfeiting mark with the magnetic stripe on the back of the card, forming a dual function of the laser anti-counterfeiting magnetic stripe. This can be called "second generation logo".

However, it was later discovered in actual use that the dual-function magnetic strip was unstable. When the humidity reached a certain ratio, it could easily cause the magnetic strip to fail. So some banks put the early laser anti-counterfeiting pigeons back on the front, while some banks adopted EMV chip card technology at the same time and their use of magnetic strips was greatly reduced, so they did not change the laser anti-counterfeiting pigeons back. So this A rather confusing situation has arisen: some VISA cards have a laser anti-counterfeiting dove VISA second generation logo on the front, while some do not have a laser anti-counterfeiting dove on the front, but only have a VISA second generation logo, but with an extra chip on the front.

As for some laser anti-counterfeiting cards being gold and some being silver, that is the difference between VISA regular cards and VISA gold cards.