SKH-1c-1968D-02 Spiked Head

Description

This second spiked head variety for the 1968-D Lincoln cent, designated SKH-1c-1968D-02, is further identified through two independent cataloging systems: it carries the Hardy Index designation 68D-1EL, and it is cross-referenced as SKH-1c-1968D-02 in the Cuds on Coins project, with a documentation date of 01/17/2018. The Hardy Index provides an alternative classification framework for Lincoln cent die varieties, and the 68D-1EL designation places this within its own systematic hierarchy. The source notes specify that this variety features an obverse die crack classified as a "Spike Head," confirming that the raised projection on Lincoln's portrait results from a progressive die crack rather than a die chip — a meaningful distinction because die cracks tend to produce elongated, linear spikes while die chips generate more rounded, bump-like protrusions. Die cracks propagate along the grain boundaries of the hardened tool steel as fatigue accumulates during production, and their orientation on the finished coin reflects the stress field within the die at the moment of fracture. The 1968-D cent was struck at the Denver Mint during the first year mint marks returned after the Coinage Act of 1965 mandated their removal. Attributed by Cuds on Coins. Struck on a 3.11-gram, 19mm planchet of 95% copper and 5% zinc at the Denver Mint.

Attribution History

• Discovered by Nolan Workman
• Cross reference: SKH-1c-1968D-02, Hardy Index 68D-1EL. 01/17/2018.
• Expert attribution by Cuds on Coins

External References