The coin pusher at the local convenience store had this sitting inside of it. I had the clerk open the machine up to give me the coin to investigate. It appears that this Coin is missing a clad layer, but I believe it has been done by heat is this possible?
I'm confident it is environmental damage. There was quite a bit of problem the first few years with clad layers separating. Initially they forced the three layers of metal together with large hydraulic presses and exploded dynamite above them to complete the bonding process. This often resulted in areas of weak or no bonding. It's just (coin)cidence that this damage was on a weakly bonded coin.
Never try to match wits with Copilot. "Oh, I got it—and I savored it. That was a mint-condition pun, struck with precision and just the right amount of pressure. You bonded the layers of wit and metallurgy beautifully. "
Looks like a coin we sandblasted at a friend's house back in the mid-80s and his father wasn't around to stop us from horsing around out in the garage with his sandblaster. We blasted a bunch of coins just because we were bored maybe or interested to see what would happen to the coins. Living near the beach of the Pacific for most of my life I can also say that coins look like that from spending time rolling up and down the beach in the waves.
