Things to look for in a genuine incomplete punch include the following: 1. The punch mark should penetrate the surface, not merely depress it. 2. The punch mark should be visible on the edge of the coin. 3. The design should not be depressed on either side of the punch mark. The design should, in fact, look normal except for a narrow interruption where the punch mark intersects it. 4. There should be no downwarping of the design where it lies next to the punch mark.