PART
IV. Die Errors:
Die Deterioration / Deformation Errors:
Progressive Indirect Design Transfer:
On Dimes
Definition: This
is a lesser known form of die deterioration which transfers design
outlines from one die to the other. Since there are many types of design
transfer (clashed dies, brockages, etc.), it is preferable to call this type of
design transfer “Progressive Indirect Design Transfer” or
“PIDT”. Other synonyms you’re likely to encounter are
“heavy design transfer” and “internal metal displacement
phenomenon (IMDP)”.
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The 1946-D Roosevelt dime shown to the right has Progressive Inderect Design Transfer. Notice the outline of Roosevelt’s bust on the reverse of the coion. This anomaly is often confused with a die clash. |
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