In Europe in the 21st century (and most of the 20th century) coins are withdrawn from circulation long before they are too worn out, the same happens with banknotes.
Look at the photograph of these coins and the first one I put you, they are circulated and the double latent image of the FNMT is still valid. It all depends on the quality of the metal with which the coin is made. Even if the latent image has scratches, it is still visible. You have to crush it to remove it.
On the other hand, 999.9 gold bullion coins like the Bull Bull Doubloon or the Caballo Doubloon or the Buffalo or 22k the American Eagle are not made to circulate much and in most cases will always be in a plastic capsule. On the other hand, I don't know what the latent images from Taywan or Japan will look like, but the FNTM images (which invented the system) look good, especially the current quadruple image. It is true that you have to move the coin in four directions to see the four images, but for that reason, you are always seeing one of the latent images.
Look this video about the Dubloon Caballo, you will see the cuadruple latent imagen from the first second.
Another problem with the latent image for circulation coins is die wear. As the die wears through use the quality of the latent image suffers. For most countries this probably isn't too much of a problem because their coinages are lower and they change out their dies more frequently. But for the US with our extremely large mintages and the fact that we use our dies so much longer die wear could very will be a limiting factor.
What they use a laser to cut the latent image into each coin individually? Do that with several hundred million coins? I could see them cutting the individual dies, but in the US with each die striking a million coins, sometimes more, I would think die wear would still be a problem.
I don't know if laser is used but anti-counterfeiting measures would be rather pointless for low melt value of USA circulating coinage IMO. I'm not aware of much counterfeiting of clad dimes, quarters, halves or modern nickels, cents. But on USA non-circulating gold/silver coins/bullion I would like to see better counterfeiting measures like Canada and United Kingdom. The ASE is being counterfeited a lot.
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Posted 09/02/2023 08:48 am
