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TPG Assessment

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 Posted 03/05/2011  09:24 am  Show Profile   Bookmark this reply Add liveandievarieties to your friends list
The concept is simple (if simply explained- no promises!)

When a die is clashed or receives other damage- It can be simply "polished out". Not too different from buffing a ding out of a car body or sanding out a gouge on a nice hardwood antique piece. The idea is to smooth out a blemish.

When this is done on a coin die it amounts to sanding the surface down until the distraction is obliterated. If my explanation is at all lucid, you can see how the 4th leg of the '37-D buffalo was polished off, how the D became missing on the '22 Plain cent and discover where the FG on all of those Kennedys went.

It's simply a matter of reducing surface area- when you polish down the surface of a die, some of the detail will be lost if you polish too far. In regard to this description only- imagine substituting the word polish for sanding.
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 Posted 03/05/2011  09:30 am  Show Profile   Bookmark this reply Add liveandievarieties to your friends list
And No- this has nothing to do with a master die. Die polishing is a practice used by the Mint on individual production dies. It obliterates blemishes such as clashes and at least theoretically, prolongs die life.
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 Posted 03/05/2011  09:35 am  Show Profile   Bookmark this reply Add Maineman750 to your friends list
Well..I do understand the concept of polishing imperfections off the die...but my question is: wouldn't a device be incuse on the working die, therefore polishing a device it would make the device bigger, not raise it to the level of the fields ? The example of buffing a ding is good, but in reality you need to add material before buffing to maintain a flat surface. Or are you saying they polish the entire die, not just the imperfection ?
Edited by Maineman750
03/05/2011 09:36 am
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 Posted 03/05/2011  11:04 am  Show Profile   Bookmark this reply Add AuNuggets to your friends list
When the face of a working die is polished, it simply reduces the "face", and reduces the height of the devices on the finished coin, or the depth of the devices on the working die (opposite effect). Very seldom will you see a "spot polish" done on a working die. They are polished across the entire surface. A spot polish would result in a depression on the die below the normal field, which in turn would result in a raised area on the finished coin.
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 Posted 03/05/2011  11:19 am  Show Profile   Bookmark this reply Add Maineman750 to your friends list
Now I get it...the key being the face that is polished.That, in turn makes me wonder if my 97 is truly the result of an overpolished die....AuNuggets can you take a look at that post(1997 LMC can you explain) ? And liveanddie...I really appreciate your time...I was almost there..AuNuggets just gave me that little push
Sometimes I know it is difficult to teach certain things and in our trying, we sometimes assume that the student already knows a particular aspect...in this case, I didn't.I was a supervisor before I retired and I am guilty of the same thing.
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 Posted 03/05/2011  11:57 am  Show Profile   Bookmark this reply Add AuNuggets to your friends list
From a buyer's standpoint, I would always opt for the more conservative service "as a general rule". You still have to make your final decisions based on the coin alone. But as far as the different services being consistent, the only 100% degree of consistency would have to be applied to the same coin being graded multiple times, because there is no consistency in the coins themselves. You will NEVER find two Morgan dollars for instance with "exactly" the same bag marks, toning, luster, degree of strike, etc. etc. Sure, there are similarities that all come into play in the final grade ("final" being used loosely), but to offer up an example..... A few years back, I had a nice Morgan dollar that had a very clean "apple cheek" in one service's MS63 holder that I cracked out and sent to another service. It came back MS65. Awhile later, after the obvious industry "grade creep" had set in, I cracked it again and resubmitted it to the first TPG, where it was graded MS66. The same coin now resides in an MS67 holder with the second mentioned TPG. When you watch the industry (that's what TPG really is) over a long enough period of time, you see the grade creep problem very well, not so much if you are dealing on shorter time intervals or just recently entering the hobby.

Before we jump to conclusions about "skewed perspectives" in grading, it's important to take into consideration the motives involved. My personal feeling is that ANACS is the most conservative and OBJECTIVE of the major 4 TPGS, based not only on their years of experience, but on the fact that they tend to be less commercialized. Let's face it, the "Join The Club" operations of PCGS and NGC are more marketing and profit driven than anything else. That could also tend to be viewed as "skewed perspective" in that certain services might "grade to the owner" and not to the coin. There can be little doubt such practices are occurring where the major submitters are concerned. But all are trying to convince you that theirs is "the best", with whatever gimmick happens to be in vogue at the time. Too much fluff, and not enough concentration on the coin.........

The way I see it, if a coin buyer is looking for conservative grading rather than hype and popularity of the plastic involved, they will make their own determinations as to which service offers what they are looking for. If ANACS continues their conservative approach, and more and more coin buyers understand that they are likely to get a better coin relative to the grades of other TPGs, business will gravitate toward ANACS, other collectors will take notice, and dealers will follow suit when customers start demanding more conservative grading across the board. All of the grading services have had problems in the past, and "grade creep" has been a hobby-wide concern. Some of the crap I see in slabs and the grades given by the "top grading services" these days makes my stomach turn when I look back to the days of what coin grading use to represent. 99.5 percent of what you see is mass-market common junk, while a few gems still lay unnoticed in their pure "raw" state if you take the time to look.

liveandievarieties said (referring to PCGS and NGC) ....... "Yes, when the companies first began they were strict. They've now redefined modern grading", it makes me think of INFLATION of the money supply, and the fact that the populace is being stolen blind while they sit in an semi-conscious stupor watching sitcoms and the nightly propaganda they refer to as News. If they were strict at first, then the obvious question is WHY AREN'T THEY STILL ? "Redefined modern grading" ? Where is the consistency in that ? Grade Creep in the coin industry has had the same effect as monetary inflation, and will continue to have the same effect until more conservative and strict standards are returned to across all services. Imagine every grading service and slab with its attached grade were to vanish overnight, leaving only the coins behind. This hobby would collapse on a moments notice, simply because of the dependency it has developed on something other than the underlying coins. Can you imagine "sight-unseen" trading of raw coins between unfamiliar buyers ? Why then should slabbed coins be traded any differently ?

Any TPG is going to be fallible, that is just a fact of life, and it's unreasonable to ever expect otherwise. An isolated issue here and there is not an accurate indicator of any service as a whole. For me, I will be paying alot more attention to ANACS in the future simply because of their increasingly conservative grading policies as opposed to new holders, different colors of placards, neat little alphanumeric notations on the plastic, laser scanning, or whatever the next best thing gimmick is. But I will always make my own determination of grade, value, and desirability based on the coin itself.
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 Posted 03/05/2011  12:11 pm  Show Profile   Bookmark this reply Add AuNuggets to your friends list
Maineman, I've had alot of interest over the years in error coinage, and there is no better field of study when it comes to the minting process and understanding the final results on the coin.

I looked over your 1995 LMC photo very closely, and these are my initial thoughts.

The first thing, and something the others apparently missed, was the fact that there seems to be considerable metal missing from the high areas on the bust of Lincoln....... but this is a zinc cent, and the copper plating is still intact. The edges of the devices of the bust are also sharp, so this rules out PMD. The metal appears to be missing, but the copper is still there, so the coin had to be struck this way. There is no sign of displaced metal from the bust.

On the other hand, the high areas of the bust that appear to be ground or sanded flat are not areas where you would expect die polishing to effect the design. These would be the lowest points of the die, and least likely to be affected by the re-polishing of the die face.

Now look at the date. You notice that the loop of the "5" seems to be offset toward the rim ? This is a good indication of foreign material on the working die itself, most likely grease as others noted in your original post thread. Now look at those high spots on the bust of Lincoln again. If the die wasn't polished down into it's lowest points (not likely), then there are only a very few other possibilities. 1. Weak die pressure (weak strike), 2. Filled die or strike through foreign material, 3. Defective planchet before striking.

First, we can rule out weak strike because the outer lettering of the motto, etc. looks fully struck for the most part. The weakness also is not across the whole face of the coin as it should be with a simple weak strike.

Being a zinc cent with the correct weight and specs as you noted, there is no real indication of a defective planchet or foreign planchet involved.

This leaves you with die fill. But the most obvious indicator of this, besides the weaknesses in the strike, are the tell-tale stains that you can see at various points near the areas of weakness. And the weakest areas correspond on the coin obv. to rev. Grease Filled Dies often show this kind of characteristic because the grease transfers between the two die faces while leaving trace amounts on the actual coin, or creates isolated weakness on the opposite face area of the coin. Remember, the planchets are cleaned BEFORE the minting process, not after striking, so anything present at the time of the strike can easily stay with the coin. I think that's what the stains indicate, especially at the bottom of the bust and near the rim of other areas of weakness. Just like the metal of the blank is squeezed out toward the rim (or the collar of the press), grease will migrate in the same direction.

I don't think this particular coin is a matter of an overpolished die, simply because of the opposing levels of weakness from the date to the highest points of the bust. I do think the die was very well worn, but also had grease added to the equation.

Anyway, my Two Cents FWIW.
Edited by AuNuggets
03/05/2011 12:52 pm
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 Posted 03/05/2011  12:25 pm  Show Profile   Bookmark this reply Add Maineman750 to your friends list
Wow AuNuggets...you and I think a lot alike on more than one level...but here is the link...and thanks for your time ! https://goccf.com/t/82581
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 Posted 03/05/2011  12:53 pm  Show Profile   Bookmark this reply Add AuNuggets to your friends list
oops, found it and responded back by editing above.
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 Posted 03/05/2011  1:09 pm  Show Profile   Bookmark this reply Add Maineman750 to your friends list
AuNuggets...you found my 95 the 97 is in question and the link above is the correct coin
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 Posted 03/05/2011  1:31 pm  Show Profile   Bookmark this reply Add AuNuggets to your friends list
DUH ...... LOL

I'll try again.
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 Posted 03/05/2011  1:40 pm  Show Profile   Bookmark this reply Add AuNuggets to your friends list
The coin in question has missing hair in the bust device, but everything else looks sharp, actually sharper than the comparison coin.

This is not the effect of an overpolished die....... just foreign matter (again) that has adhered to the die at the point of the missing hair. In simple terms, the foreign matter filled up the space where the hair "should" have been. You will see this alot on missing letter and missing mintmark coins. Just a little matter filling up the space where the metal was intended to flow. Look at how sharp the lines are around the area of the missing hair. This is usually a good indicator that you are dealing with a filled die. If the detail had simply been polished away, there would be more "softening" and "averaging" into the bust design.

Just for the sake of argument though, there is also a "ghost image" at that point on the coin extending out into the flat face of the coin design. While having the same effect, there could have been a piece of foreign matter stuck to either the die or the blank at the time of striking that later either fell off, or remained adhered to the die.

My opinion anyway
Edited by AuNuggets
03/05/2011 2:45 pm
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 Posted 03/05/2011  1:44 pm  Show Profile   Bookmark this reply Add Maineman750 to your friends list
Hey, take your time...and I really do appreciate the in depth analysis.I know it takes time and the experts are flooded with questions, but for me it is great to learn the whys and process of elimination that brought you to the conclusion.Since I retired,I now have the time to learn what I missed all those years and it's really enjoyable.Thanks
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 Posted 03/05/2011  2:01 pm  Show Profile   Bookmark this reply Add AuNuggets to your friends list
I'm not an expert by any means, just been playing with coins since I was 7 or 8 years old. Always had a fascination with them. Semi-retired myself, so I enjoy the forums now too about as much as the actual collecting activities. There is always something new to learn. Things would get boring pretty fast otherwise.
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 Posted 03/05/2011  5:10 pm  Show Profile   Bookmark this reply Add Maineman750 to your friends list
Yup..and actually I still do consulting work part time from home.I found that retiring at 51 left me looking for some kind of challenge so I got more involved with coins than I had been. I too have had an interest since early on....looking for 55 double dies when I was 5 or 6 and Mercury dimes around 1965 or 66.These forums have given me access to so much information that I find myself even more interested than before.Lots of good guys on here and always something to learn,I think you'll enjoy it.thanks again.
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