PART V: Planchet Errors:

Bi-metallic Errors:

Misaligned Cores

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 misaligned core may occur for various reasons. Three scenarios are listed below:

(1) Center hole of ring too small, grossly misshapen or both, (too small or too misshapen to accommodate a correct fit for a correctly-sized core).

(2) An incorrectly sized core which will not fit into a normal sized center hole of the ring.

(3) An improperly inserted core due to malfunctioning equipment or inattentive workers, (even when both components are without flaw).

A 1998 Sri Lankin 10 Rupees having a misaligned core.

A 2007 Slovenian two euro with grossly misaligned core.