Definition: Denticles are small, toothlike design elements all the way around the perimeter of some coins, especially of the 18th and 19th centuries.
See also Why do Coins Have Denticles?
See also Why do Coins Have Denticles?
Common Misspellings: Dentacles
Examples:
You should look closely in the denticles of Large Cents for misapplied mint marks.

