SKH-1c-1971D-29 Spiked Head
Error
Description
Nearing thirty documented spiked head varieties for a single date and mintmark, SKH-1c-1971D-29 on the 1971-D Lincoln Memorial cent was cataloged by Cuds on Coins on February 14, 2018. The trajectory from SKH-01 through SKH-29 spans roughly two years of active discovery work — the first entries documented in 2016, with the catalog expanding through 2017 and into early 2018 as variety specialists continued extracting new finds from the vast population of surviving 1971-D cents. Each discovery adds another data point to what has become a comprehensive census of die crack behavior across a large population of nominally identical tools: twenty-nine separate obverse dies, all manufactured to the same specifications and deployed under similar production conditions, each developing a fatigue crack at the same design feature but producing a geometrically distinct spike. No external cross-references have been documented. For collectors approaching the 1971-D spiked head set as a complete collecting objective, the catalog's growth into the upper twenties extends the hunt well beyond casual searching — identifying and correctly attributing SKH-29 requires the patient, systematic examination methodology that characterizes advanced die variety collecting, where each coin is inspected under magnification with directional lighting to reveal the raised spike and determine its specific geometric profile.
Attribution History
- Discovered by Bob Byrd
- Cross reference: none. 02/14/2018.
- Expert attribution by Cuds on Coins
External References
Community & Reference
Related Errors
More Spiked Head Errors

1858 Flying Eagle Cent (Small Letters) Spiked Head
Spiked Head
1794 Liberty Cap Large Cent (Head of 1794) Obverse Spiked Head
Spiked Head
1795 Liberty Cap Large Cent (Lettered Edge) Obverse Spiked Head
Spiked Head
1796 Draped Bust Large Cent (Reverse of 1797) Obverse Spiked Head
Spiked Head
1835 Matron Head Large Cent (Head of 1836) N-8 Obverse Spiked Head
Spiked HeadCollector Essentials
Tools for examining and preserving error coins and die varieties.
10x-20x Jeweler's Loupe
Essential for examining die varieties, doubled dies, and RPMs
Cherry Picker's Guide
The definitive reference for U.S. error coins and die varieties
2x2 Coin Flips & Holders
Protect and organize your finds with archival-quality holders
USB Digital Microscope
Capture detailed images for documentation and community submissions
As an Amazon Associate, NumisDex earns from qualifying purchases.




