1921 Peace Dollar grading

The usual usage of the word refers to parallel grooves; however, I have used the term to refer to parallel incuse grooves, and parallel flat or raised characteristics on a coin's surface. In geology class we used the term to describe layers of material.

So, a coin with a parallel alloy streak impurity could be called striated; but that is a stretch. The parallel grooves on the gold dollar are "actual" striae. Now, explain how post mint roller damage can occur w/o making the coin flat? That is not the answer. The only things that can make these marks is PM scratch damage or Pre-strike planchet "damage." Now think about why the grooves are both into the field and on top of the relief design? When the light bulb goes off, you'll know more than many collectors about these marks.

 

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You have giving me a lot to contemplate. Thanks.
and as Arnold Schwarzenegger said "I'll Be Back" - After my young grandson finds another POI

 

What's a POI?

 

Point of interest

 

Ok ... The light is now blinking .. from my understanding of the term STRAIE defined by Webster Unabridged Dictionary

[strahy-uh] /ˈstraɪ ə/
Spell Syllables

• Word Origin

noun, plural striae [strahy-ee] /ˈstraɪ i/ (Show IPA)
1. a slight or narrow furrow, ridge, stripe, or streak, especially one of a number in parallel arrangement:

Much different than my simple definition of STRIATION as a mixture of metals. Thus - flat but improperly mixed and/or improper metals.

For the techno-savvy person refer to this site -- > http://www.asminternational.org/emails/enews/amp_pdfs/amp16605p039.pdf

Thank you for furthing my numismatic knowledge.

 

Yes, you'll understand they couldn't have happened at the Mint.

Rollers didn't have regular lines machined into them; they wore irregularly under the relentless force of squeezing sheet metal with tons of pressure.

 

You just furthered mine. So my belief that an alloy streak can be called one type of striae is a relief.

SuperDave, If I read your post correctly, you have just generated some misinformation and muddied the waters for tpsadler. You are moving into "Moderator Territory" now...LOL!

I'm sorry! IMHO, you are absolutely wrong. The marks on the gold dollar were on the planchet AT THE MINT before the coin was struck!

You have become one of my favorite members because of your posts. In spite of that I am not going to discuss these marks any more with you (no matter what or if you reply) or any other member UNTIL tpsadler has a chance to figure things out for himself. Then, I'll take all questions/opinions and hope to convince you as this coin has been seen by two TPG's and one dealer at the FUN show last week. Nevertheless, everyone here is entitled to their personal opinion.

 

I understood @SuperDave to say these could not have happened at the Mint. I did not think the Mint mixed metals for the planchets they only made the discs from sheet material as they would not be responsible for the mixtures. ???

 

So how did they migrate, at their strongest, to those places on the coin where metal is most likely to have moved in liquid fashion during the strike - the lowest points of the die, furthest from the original planchet surface?

I'm no stranger to planchet striations. No Morgan enthusiast is. I get how planchet striations can reach into devices.

This ain't that.

 

OK so what is it?

 

This is one

 

Dunno yet; that's where "we" is better than "me."

But look at the coin - the cuts are deepest in the areas furthest-removed from the fields - and tell me that stuff is a strike artifact. Most of it is far deeper than any original roller striation would have been on the unstruck planchet.

The possibility is non-zero, but vanishingly remote to me, so remote that postmint explanations take precedence by the laws of averages. It would be easier to get these marks onto a coin afterward than get them to survive a strike in that condition, so that is the working hypothesis until strong evidence to the contrary arrives.

 

Yes, SuperDave said that.

When this gold coin was made the Mint did EVERYTHING.

Personal question - never mind. If you are spending a large amount of money on coins (different amount for each of us depending on our means) you should join the ANA and take the Coin Making Correspondence Course. It will pay big dividends. There are books such as From Mine to Mint that are far too technical for most collectors. All of us here can help you learn BUT you need to take the steps AS YOU HAVE OBVIOUSLY DONE ALREADY with the give/take here on CT.

I enjoy teaching. I do not enjoy typing. I could show/answer your questions in about five minutes of personal instruction and if anyone else was there with us I'll guarantee 100% agreement using actual coins and a stereo scope.

Opinions are a dime a dozen. Some opinions here "clash" with the so-called experts, grading/authentication professional/major dealers, etc. You will find out as you educate yourself that in this age of slabs, many successful dealers are ignorant about one phase of Basic Numismatics 101 "characteristics of genuine, original coins." I got all caught up in these discussions because I hate to see "opinions." I deal in "proven/accepted facts." Proven facts can change (one time the earth was flat) so I have learned to keep an open mind. There is much to learn here...enjoy the journey.

 

As I said before, I'll answer your questions at a later date.

 

I'll bet if you have time to explain to him what happens to a coin with planchet damage (use scratches) when it is struck with a die...he'll get it! I cannot wait to discuss the process with you both Just start from scratch using my image.

 

No silly. Look up the word. I'm ignorant when it comes to cooking a roast! I'm ignorant when it comes to computers...see Many collectors/dealers are ignorant when it comes to the things they see on coins. NOT using photos like here. We all sometimes need to see the actual coin to have an informed opinion.

Now, think about what happens when a planchet with a scratch is struck by a die! I'm leaving work...Yeah!

 

WHEN IT IS NOT STRUCK OUT:

What happens to a planchet scratch when it is touched by the flat part of the die?

What happens to a planchet scratch when it is in the design "hole" of the die.

If I understand your question are to referring to the "What happens at the High Relief Points of the Die when a planchet is struck. When that point is Scratched prior to the Strike?"
Are you referencing the "Ghost Effect?"

 

All you're doing is hinting that you know more than we do, and asking vague questions. I'll respond to a point when you make one.

If ever.