Diameter: A genuine 1893-S Morgan silver dollar has a diameter of 38.1 millimeters (1.5 inches). A copy may be slightly larger or smaller than this.
Thickness: A genuine 1893-S Morgan silver dollar is 2.54 millimeters (0.1 inches) thick. A copy may be slightly thicker or thinner than this.
Color: A genuine 1893-S Morgan silver dollar has a matte silver color. A copy may be a different color, such as shiny silver, gold, or copper.
Details: A genuine 1893-S Morgan silver dollar has fine details on the design, such as the hair on Liberty's head and the feathers on the eagle's wings. A copy may have less detailed or even blurry designs.
Sound: A genuine 1893-S Morgan silver dollar makes a ringing sound when dropped on a hard surface. A copy may make a dull sound or no sound at all.