PART VI. Striking Errors

Bi-metallic Errors:

Double Punched Center Hole

Definition: Bi-metallic error coins are restricted to foreign countries. These coins may experience any of the many types of striking errors listed in the Error-Variety Ready Reference however, one must understand we are dealing with two components, a ring & a core. Any number of exotic possibilities or combinations of die varieties, die errors, planchet errors & striking errors can be found on bi-metallic coinage.

A 2004 Colombian 500 pesos. The center hole has clearly been double punched.