Walt (oneminmicro) Ancient Roman Coins Viewed Under a Microscope – Hidden Details Revealed. Posted: May 20, 2025 | Last updated: May 30, 2025. More for You ...

As a check, you can divide the number of coins currently in circulation in the world, 1.5 trillion, by the average life of a coin, 25 years, to reach a figure of 60 billion coins minted per annum.

It’s pretty neat clearly seeing tiny specks of dust or lint present on surfaces when [Steve] demonstrates imaging things like coin cells. Many a hacker knows that the devil is in the details ...

They examined all four coins under a powerful microscope and confirmed in the journal, PLOS 1,, external that there really were scratches, ...

The microscope makes images out of 4,000 very detailed separate exposures. It takes three days of processing to convert them into a single image. Photo: Martin John Callanan ...

The collector said you will likely need to use a microscope to properly see the date - as it is incredibly small. "You can see here the date 2017 in micro-lettering on every side," he said.