The coin has several affected areas on obverse and 1 area on reverse. Last pic is for comparison from ngccoin.com. all opinions welcome.
@cpm9ball says.. Crappy Zincoln Here are it's relatives with Environmental Damage I found metal detecting.. Yours is also environmental damage.. Not a Mint Error of any kind
Do you believe that this might be a mint made error? The NGC picture shows some grease/metal filings “schmutz” that’s responsible for the majority of filled die errors. Grease from the equipment mixes with small metal particles from the equipment and planchets to form this mixture that can occasionally land on a planchet or die. Minor filled dies are common. While it’s unusual to still have of the material still adhered to the coin, it really isn’t anything more than a curiosity, although it does provide a good picture for an educational opportunity. I honestly don’t know how you can mistake the grease in the NGC pic for the heavy corrosion/environmental damage on your coin. You’ve been posting here for a while, and appear to have been looking at sites like error-ref. I really hate to say this, but if you can’t tell that your coin is damaged, maybe it’s time to consider another hobby. You’re just not getting it.
Looks like a combination of hydrozincite and verdigris. If you are interested, you could mix a 50/50 mixture of white vinegar and hydrogen peroxide and place the coin into it for short bursts to remove the encrustations and reveal a coin with porosity. Essentially, every outcropping of hydrozincite dissolves away and reveals the breaks in the copper plating. Over time, the hydrozincite will reappear. As noted...spend it while it hasn't fully disintegrated.
I know that your minds are set. The anomaly on the reverse shows through on the obverse as it does when something hard is struck through. Look at the right side bottom of memorial bldg; notice the anomaly is on top of it. Look now on the obverse above anomaly in front of face. Impression is very visible. You can make out the bottom right of bldg that the anomaly is on. Did corrosion cause this?
Did Corrosion cause this?? ABSOLUTELY!!!! I really can't understand why you've failed to pick up the basics. It's not rocket science. Look at the coin. There is no way on God's green earth it can be anything but corrosion.
I have found what you are looking for on several occasions and as compared to your NGC example, but all on B.U. coins which is what you really should be looking for to verify this. In fact I found nearly a dozen of them in just one roll. Trying to find one on a well circulated coin is nearly an impossible task. There are too many environmental factors to consider on circulated coins. All it takes is one pin hole or one crack along the periphery for the zinc to start bubbling out and spreading across the rest of the coin. Then there is 31 years of other accumulated debris on the coin obscuring anything original. The others have their minds made up because of their experience with these problem cents and you have your mind made up because of just your one NGC example and trying too hard to find a similar example. Try finding an example on a much nicer piece in AU-BU range that has no other problems.
I came here looking for some delicious steamed clams or mussels in garlic broth. I’ve been let down yet again.