Why is there a patterned edge on the coin?
In ancient times, the value of coins was equal to the amount of metal that they contained. Coins were made of precious metals gold, silver, and platinum. Artful scammers took advantage of this by cutting off the edges of the coin, collecting gold and silver for themselves. This problem lasted all the way until the times of Sir Isaac Newton. As an employee of the British Royal Mint, Newton proposed making thin notches around the edge of the coin. If people cut off the edges, then it was immediately noticeable. If you look at your coins, this procedure is carried out to this day, even though it’s no longer needed.