A coin with these has 'reeded' edges.
Reeds were first put on the edges of coins back in the days when coins contained precious metals such as gold or silver. It was a common practice for crooks to shave off a tiny amount of metal all the way around the rim of a lot of coins, collect the shavings, and sell them to a metal dealer. However, shaving a coin with a reeded edge would immediately be obvious and the police or mint officials would know that someone was committing fraud.
Coin Edge.
A nickel has a smooth edge. No ridges.
The United States dime (10 cents) has 118 edge ridges. The coin is 17.91 mm in diameter and is 1.35 mm thick
The ridges around the edge of a dime is called reeding or milling. There are 118 ridges.
According to the US Mint, a dime has 118 reeds/ridges.
Coin Edge.
A nickel has a smooth edge. No ridges.
The United States dime (10 cents) has 118 edge ridges. The coin is 17.91 mm in diameter and is 1.35 mm thick
There are 119 ridges on the United States quarter dollar. The ridges are there mostly for making sure the coins are properly used in coin operated machines.
The ridges around the edge of a dime is called reeding or milling. There are 118 ridges.
Zero.Dimes have ridges. Quarters have ridges. Pennies and Nickels don't.
Nowadays, alongside size and shape, to help those with sight difficulties distinguish different coins. When coins were actually made of a precious metal they were there to prevent "clipping" or the practice of shaving a tiny bit of metal from the edge of the coin. A clipped coin would be easy to spot because the ridges, properly called a "reeded edge" would be worn away
According to the US Mint, a dime has 118 reeds/ridges.
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A US dime.
An American quarter has 119 ridges. Believe it or not, a dime has 118 ridges- that's only one more ridge!
118 ridges are on a dimes edge