As others have said, this is a clash, not a counterclash.
Actually, I mis-typed the weight. I think the reported weight was 2.87 grams.
This coin was reported to be significantly overweight (2.97 grams, as I recall). That creates the possibility that this cent was struck on a zinc...
The last of your three coins is probably an in-collar uniface strike (full indent). It's certainly not a capped die strike.
To answer Kevin Mader, only the raised ghost of the Memorial is present. The incuse ghost of Lincoln is absent. This indicates that the disc...
Presuming this specimen has a normal weight, the reverse was struck through a split planchet or a planchet derived from rolled-thin cent stock.
Solid state diffusion caused by exposing the cent to elevated temperatures.
It's an uncentered broadstrike with a strong collar scar on the obverse and collar clash on the reverse. It was struck with the reverse die...
I'm now writing for Coin Week. Here's my first article: https://coinweek.com/mint-mishaps-four-quarters-show-trans-strike-damage/
It should be labeled a "reverse die cap", or better yet, an anvil die cap. By labeling it "reverse capped die", this implies the coin was struck...
Both faces show cracked copper plating overlying a low ridge ring.
Chemical damage. Alan Herbert called these "sewer coins", presumably because raw sewage can create this effect over time.
The mate for this coin would naturally be an off-center half dollar with an unexpanded, low-pressure brockage of the obverse design on its reverse...
This half dollar is an in-collar double strike with a low-pressure indent on the second strike. Minimum die clearance during the second strike...
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