Pete Apple would love this.
Improper alloy mix.
A Rockwell pin on the raised edge, where Pete Apple has reported is the only place they are administered. The depression was covered. 3 die cracks.
The discussion in question between Pete, and Fred, Apple and Weinberg is online under the name "can you tell a real rockwell test" on Coin Talk.
We'll see...WHAT? What brought your attention...?