| Author |
 Replies: 20 / Views: 3,221 |
|
New Member
United States
2 Posts |
Hi! I have no clue how the obverse side of this coin got so goofed up. The reverse is normal. Can anyone explain please? Does this error give it any great value? Thanks so much for your help! :)   *** Moved by Staff to a more appropriate forum. *** |
|
|
|
Pillar of the Community
Canada
1747 Posts |
Welcome to the forum. I don't think this is an error, but I am not an expert in US coins. this looks to me to be what is called PMD (Post Mint Damage). Perhaps it was spun from the center and wire brush was pulled along the coin? I am just speculating as to the cause. |
|
Bedrock of the Community
United States
12437 Posts |
 Your coin has been damaged, possibly by a wire wheel as ace mentioned. |
|
New Member
 United States
2 Posts |
Thanks so much for your replies! If it was PMD, wouldn't the damaged area be darker colored as this is a clad coin? The gouges are somewhat deep - as you can tell but still silver colored. I'm learning so please be patient with me... :) |
|
Bedrock of the Community
United States
12437 Posts |
The outer cupronickel alloy layers are fairly thick so it would take a very deep gouge to expose the copper core. If it was plated instead of clad, that much damage would have exposed the core.
|
|
Moderator
 United States
14463 Posts |
I moved your thread to the Modern Coin section |
|
Moderator
United States
187662 Posts |
|
|
Bedrock of the Community
 United States
12812 Posts |
Wow, what a beating.  Agree with the above assessments: PMD. Guessing that "raised" spot in the center is where it was clamped/held for... zee procedure.... |
|
Pillar of the Community
United States
1804 Posts |
|
|
Pillar of the Community
United States
1804 Posts |
Have never seem one on the reverse. Do not personally believe it was done with a brass wheel grinder. Nickel is way too hard for BRASS, I guess. Betting on STAINLESS STEEL (KNIFE LIKE) tool. The groves are both clock wise and counter clock wise in the same area. Seemingly like trying to move it. Looks like some one is TOGGLING it, for a reason. This one is hit RIGHT side, LEFT side, JAW, and FOREHEAD.  |
|
Bedrock of the Community
United States
12437 Posts |
Why would it have to be brass? I own several wire wheels with steel bristles. Ultimately, it does not matter at all what tool what used to inflict the damage because it does nothing to change the fact that the coin was damaged post-mint. There is an almost infinite number of ways to damage a coin, some are plainly obvious while others are an enigma wrapped up in a riddle. Attempting to figure out the specific cause of damage can be a bit of a fool's errand since generally the only one who knows definitively is the person who did the damage in the first place. A more productive process is to learn what can and cannot happen during minting, that knowledge is much more useful and will make spotting PMD much easier. |
|
Pillar of the Community
United States
1804 Posts |
BIO  Quote: A more productive process is to learn what can and cannot happen during minting, that knowledge is much more useful and will make spotting PMD much easier. Will you share your thoughts? I am here to learn  Particularly interested in MINT knowledge about times that a dies has a failure. Or when a coin is stuck in the COLLAR. Thank you kindly. |
|
Bedrock of the Community
United States
12437 Posts |
What are you referring to as a "die failure"? Dies can be taken out of service for wear(~100,000- 1 million business strikes depending on denomination) or damage(cracks, breaks, etc) but it has to be fairly significant to shut down the press, remove a die, and resurface it or replace it with a new one. As long as a die can be used to strike a reasonably legible coin, then the die will remain in service.
A coin stuck in the collar can result in a multi-strike coin or another planchet could be fed to the dies and then you would most likely have an off-center or broadstruck/brockage combo on the second planchet if the first planchet had been struck first. There are many factors in play that could effect the resultant error, including the type of press(older Bliss presses had a vertical die arrangement while the newer Schuler presses have horizontal dies) and the hammer/anvil die orientation.
|
|
Bedrock of the Community
United States
12437 Posts |
Even in this modern internet age where most information is just a click away, a solid numismatic library is a must to learn about the minting process. Looking Through Lincoln Cents by Charles Daughtrey has a nice primer on die production and Price Guide to Mint Errors by Alan Herbert is indispensable as an error reference. Herbert created what he called the "PDS" system which classifies errors and varieties by Planchet, Die, and Strike.
|
|
Pillar of the Community
United States
1804 Posts |
BIO Quote:
What are you referring to as a "die failure"? Dies can be taken out of service for wear(~100,000- 1 million business strikes depending on denomination) or damage(cracks, breaks, etc) but it has to be fairly significant to shut down the press, remove a die, and resurface it or replace it with a new one. As long as a die can be used to strike a reasonably legible coin, then the die will remain in service. At the risk of really showing my newbieness. Denomination: My question is directed only to Eisenhower dollarsCan a collar, or hammer, or anvil die ever have a catastrophic failure? Thank you for sharing your knowledge. |
|
Valued Member
United States
204 Posts |
I think this is PMD (Post Mint Damage) caused by some type of blade or machine |
| |
Replies: 20 / Views: 3,221 |
Posted 03/31/2015 4:57 pm
