Abstract: A coin crimper for curling open end edges of packages with coins packed therein includes a package receiving opening, curling apparatus for curling the open end edges of the packages inserted in the opening and driving apparatus for rotatively driving the curling apparatus. According to the invention, the coin crimper comprises package receiving opening diameter changing apparatus for changing a diameter of the package receiving opening depending upon kinds of coins and hence packages of the coins, and curling position changing apparatus for changing a curling position where the open end edges of the packages are curled depending upon the coins, thereby enabling packages of coins having different diameters to be curled by the single coin crimper.