SKH-1c-2017P-08 Spiked Head

Description

The eighth cataloged spiked head from the 2017 Philadelphia Lincoln Shield Cent, SKH-1c-2017P-08 joins an unusually deep sequence that makes 2017-P one of the most extensively documented dates in the modern spiked head catalog. At this depth in the sequence, each new entry provides diminishing novelty but increasing analytical value: the more dies from a single date that are documented with portrait-area cracks, the stronger the dataset becomes for studying crack distribution patterns, comparing spike morphologies across dies, and estimating the overall incidence rate of this failure mode within the date's total die population. Researchers who compile cross-entry comparison tables—noting the angle, length, base position, and associated field characteristics of each spike in the 2017-P sequence—can begin to identify whether certain regions of the portrait are more susceptible to cracking than others, a finding that would have implications for die design and hub engineering. Cataloged and attributed by Cuds on Coins.

Attribution History

• Discovered by Jon Rhodes
• Cross reference: none. 04/19/2018.
• Expert attribution by Cuds on Coins

External References