1967 Lincoln-Struck Through + Lamination Here's one I found while hunting coin rolls. On the reverse it appears to be a wire behind the word "UNITED" and extends below the monument. On the obverse there are two areas where the lamination is flawed; behind "LIBERTY" and across Lincoln's coat and from his jaw to above the date. Comments? Can I retire?
I believe you... I mistakenly jumped at the conclusion that it was something struck through. Doesn't a die crack begin at the outer edge? On this coin both ends of the crack are some distance away from the rim.
A die crack can start and end anywhere on the coin. At first glance this looked like a strike through because of the evenness of the raised area. Generally a crack would be a lot more jagged than we see here. A strike through a wire or something similar would produce an even sized effect like you have, however the defect would line up where it passes through the lettering. This one goes out of line through the "U" and a couple of other places. Bottom line is that it probably isn't a strike through; it is probably a die break, but it could also be ???
I would think it's just a die crack and a nice one. Won't be a strike thru because it's going under the letters that's what it looks like a die crack
That is a funky die crack then. It is cracked everywhere there is not a letter. How is that possible? The only way I know of that could happen is that the die was scratched or otherwise marked.
Cannot explain the process, but the the laminations occur in all Lincolns from 1909 on. From what I have gleaned, I believe that it has something to do with air in the planchet.
Lamination errors, as most of you know, are due to a coin being struck when one of the layers of the metal planchets has fallen off before entering the die. These reach the dies and voila! You have lamination errors!
Another way it happens is when a foreign material or gas becomes trapped within the planchet when the metal is processed during the manufacture of the coinage strips used to create the blanks that will then be made into planchets.
On another forum, it was explained to me that it was something coating the coin. Tomorrow I'm going to clean it with acetone to see what comes off. I'll post the results later in the day. Btw... does nail polish remover contain acetone and if it does, is it a suitable substitute?
By clean, I hope you mean just dip it. And, yes, SOME nail polish contains/is acetone. A lot of what they sell nowadays is not acetone. As for being a suitable substitute, most here will tell you not to use it because of the impurities. (BTW, the most common impurity is water.) IMHO, acetone will do little good for that coin, but you can try it anyway. And, nail polish remover will not hurt this coin. Were it an uncirculated coin, I would give you a different answer.
Thanks. Yes, I'm just going to dip it. The coin isn't a key date anyway and with the way it looks right now anything will be an improvement.
That is somewhat correct! It appears that the coin may have been in a fire and something melted or dripped onto the coin and is now starting to come off! The coin does have a really nice Die Crack though! Frank
http://www.cointalk.com/forum/attachments/41506d1235616445-linc2aa.jpg This looks like a struck-through fiber or wire to yours truly. Something like that was on the reverse die when the hammer came down and pressed the planchet into it and the reverse die. I agree with RLM, that reverse die wasn't cracked. If it was, that'd be some trick crack, making it right in between the lettering. EDIT: Hey, wait uno minuto, that can't be! I thought that thing was sitting down! OK...I think it's just a real weird-looking die crack, now. But, it can't be a struck-through fiber or wire, that'd be a recess.