PART IV. Die Errors:
Die Deterioration / Deformation Errors:
Severe Die Wear:
Radial Flow Lines
Definition: As the die ages, the cold metal flow from striking planchets will groove the die face in a radial pattern.
The 20 Sen coin from the Bank Negara Malaysia shows severe die deterioration. The letters in BANK and NEGARA show deep, radial grooved lines caused by cold metal flow. Die deterioration is present around the leaf of the hibiscus flower. The bottom of the letters also show die deterioration doubling.
The 1988-P dime shows strong radial flow lines.