Clear full photographs of obverse and reverse first and then close ups of areas of concern. Really can't tell much from your photograph.
I can tell that, as mentioned, it's crud or wax, even from the small area photo. It is not an error coin, and larger photos are always welcomed, but won't change what this is.
could it be the grease used, dried ..reason... I have a few with the same sludge. is this a quawinkeedink.
Ok.. Whatever. I'm done with this thread and any other thread that you create from now on. You don't know how to accept good and correct answers. Good luck.
Did you ever consider that it could be sludge/grease/crud got on the coin during circulation after it left the mint? How do you know it's the same? Did you do a chemical Analysis? The 14th Century Franciscan Monk and Philosopher William of Ockham once said that the simplest explanation is usually the correct explanation. There are many, many, many ways for crud to get on a coin during circulation and not too many ways for Mint derived grease to stick to a coin and not come off during years of circulation. It's a shame you managed to alienate @paddyman98 He usually has a lot of patience with new collector error questions and has a wealth of knowledge about error coins. The other thing you probably didn't pick up is that one of most respected error experts/dealers in the country (world?) responded to your post. Not too many places where you can get that feedback. As a new collector, It's understandable that you didn't know, but just something to keep in mind
Please forgive me for being so objective its in my nature to follow all clues or possibilities for an answer to the problem. the clues : 2 pieces were found with same exact sludge in two different ( lets call them) lots . I'm gonna stop there, but will still proceed for an answer to the find. IN NO WAY DID I MEAN ANY DISRESPECT TO 98 . Growing up in our house we talk like this to hammer out a solution but in the end its all good, with no feelings hurt. kind of a debate for the answer. leaving no open ends. with all grounds covered. now relax 98, please...a teacher would give input and send the student to solve the problem with guidance where needed, I guess that's what I'm looking for. this hobby to me is not a book, its finding out along the way the different paths to follow for my enjoyment, knowledge, and sharing even if I'm wrong.
@Saphire7 Ok.. Let me just say this. Re-read the responses given to you in the previous posts. Think about them carefully. You have been given answers from us who have been dealing with coin issues attributions for many decades. Now, you have every right to accept or not accept the answers. You can ask any question you want. So from now on I will continue giving you the best aswer that I can but if you still have questions then I will let someone else try to better explain them for you. Understanding the minting process and how mint errors occur and don't occur is very important and it takes time to understand. I visited the Philadelphia Mint for the first time a few months ago and still was able to learn new things after 33 years of collecting coins. We can all learn new things at any time. But. Like I said. I am still done with this thread. It's just plain old gunk that you found on 2 different Cents. But you won't find anyone to agree with what you think it could be.. Peace
