SKH-1c-1964-01 Cud

Description

Listed with "Cud" in its title due to the original data import conventions, this SKH-1c-1964-01 is actually a Spiked Head variety — correctly classified under the "Spiked Head" error type in the database. A spiked head occurs when a die crack or die chip near Lincoln's head creates a raised projection or "spike" extending from the portrait, typically from the top of the head, forehead, or hair area. The spike is formed when a small fragment of die steel breaks away, leaving a void in the die that fills with metal during striking and produces a distinctive raised protrusion on the finished coin. This proof strike variant was struck from the 1964 proof mintage of 3,950,762 cents at the Philadelphia Mint, where proof dies operated under elevated striking pressures that could accelerate die deterioration even within the approximately 3,000-impression service life of a proof die. Cross-referenced as Cohen Index 64-76 with a documentation date of 06/11/2016, indicating that this variety was cataloged relatively recently in the die variety research timeline. The Cohen Index provides a systematic numerical catalog of spiked head varieties, and the 64-76 designation places this as the seventy-sixth spiked head documented for the 1964 date — a testament to the enormous number of dies used that year and the frequency of die deterioration among them. A companion listing exists under the same SKH-1c-1964-01 designation as a regular strike variety. Attributed by Cuds on Coins. Struck on a polished 3.11-gram, 19mm bronze planchet of 95% copper and 5% tin-zinc.

Attribution History

• Discovered by Louis A
• Cross reference: Cohen Index 64-76. 06/11/2016.
• Expert attribution by Cuds on Coins

External References