Color marks on zinkers, how?

You also missed that I speculated as to what it certainly appears to be. I did not speculate as to a direct cause.

 

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I am specifically inquiring about 2010 and later pennies, uncirculated, which display these specific types of marks that I have not observed on zinkers prior.

Perhaps you have earlier pennies similarly marked and could show me some? Maybe some early 80's specimens? Can you show me any from the 80's or 90's that said rinse spots have since manifested in this "toning" remaining stable and static or blossomed into monster color coins similar to beautifully aged and gradable, or doctored and ungradable 100+-year-old silver coins? A progression?

I am willing to accept that if toning broadly describes any and all coloring, ok.

I do not see that the linked article addresses or explains the actual observable nature of these spots or their causes.

However, it is clearly evident these "toning spots" present to the naked eye as rinse spots right out of BU rolls and hot off the mint.

I see these only on the 2010+ pennies and perhaps they exist on the 2009's as well. I don't have any of those BU to verify and none of my 2009 AU-'s have these "rinse spots".

Careful examination reveals the "rinse spots" have very undeniably common features and even with the huge spots showing pinpoint or slit piercing of the copper plating, surrounded by greater amounts of "toning", not visible to the naked eye.

I'll get some pix up in a few minutes. Thanks.

 

So toning that presents as a Heat Affected Zone and in some cases the cause of said HAZ seemingly pierces the plating, is just toning that only is observed on plated zinc pennies from 2010 and later? You over-looked that and what I wrote was most commonly accept or refer to these prevalent surface blems as "rinse spots". Not verbatim, but close enough.

 

Once the coins were minted, the mint sold them in fiber bags or ballistic bags. Rolling was most usually done by secondary firms ( String, etc. for banks, or in the early days rolled by banks), so the trail of evidence is interrupted and would be hard to place any fault on the minting process itself. So proving something to be a "rinse spot" can not be done without the mints involvement and participation in experimentation. Until the high pricing of 69 and 70 ( MS and PR) came along, it was a mute point. On your coin, it is a reactive condition. I do not know what kind of 'virgin' roll you obtained it from, but it could have been lubricant from a bank rolling machine or a diet coke by an employee. If you are looking for an absolute answer. In my opinion there is none.

 

Post 26 and 27:
1) Same Coin and Same basic shot. Any variance not due to coin position under objective lens, but, handheld camera over eye-piece and hand cropping to near square.
2) 1st lighting A and second lighting B
I) Lighting A Natural Daylight with Long Range UV
II) Lighting B Natural Daylight

 

Posts 28
1) Different camera and lighting, cool range daylight around 5500-6000K
2) Same Camera as 1 but with full spectrum daylight added

 

Post 29:
1) Same Camera as #1 and same lighting as #2, see post 28
2) Same as #1 this post and coin rotated 180 degrees.

The same coin in used in all posts from 26-29

Inspect the highest MS graded coin on PCGS's site for the 2010 and later series if you're curious.

 

Yes, that is what it appears to me to be and nothing else.

I'll dig a few more out whose plating has been pierced surrounded by a much larger "toning" affected zone. Keep in mind, these are plated with electricity, or perhaps you think that is horse pucky too?

Assuming you'll agree they are electroplated, high voltage and low amperage or high amperage and low voltage?

 

Extrordinary fool if ya ask me.

 

Those colors are "radiated wavelengths", the toning colors are reflected interference wave colors, "ambient" temp.

Ok, I'll ask ~"exactly are you hoping to convince us about?" You seem to not want to accept knowledgeable answers, but instead dance around them "looking for an alternative scientific universe" to explain their theory. Learn something new.

 

Copper is going to change color for so many reasons, they can't be listed. I still feel it's normal stuff. With spots, my first thought is something organic caused it.

 

I really like the name you use when you post!

 

Your explanation only describes their appearance as defined by the accepted broad meaning of the term, "toning".

I've shown how they appear under repeatable conditions.

The definition and description you provided does not address these 2010+ specific tiny spots or attribute them to what has to be a very specific cause. These spots are quite common in the series as the highest MS grade slab in the shield series has more of these tiny spots than I can count. Do any of the high graded memorial zinkers? If they do, I am unaware but, open to being shown and educated.

Your explanation does not explain why earlier zinc coins do not show the same "toning".

The other gent offered that the US Mint announced a change to the planchet rinsing process in 2000. I do not know if I have overlooked these spots, especially with respect to those spots presenting as heat affected zones, in the pre-shield 2000+ series and candidly, I have no mint rolls of them to check. It is unlikely I'll go out of my way to buy any for the purpose, but, if some fall into my lap, I likely will investigate.

Would it be helpful for me to provide photographs showing BU's with much larger HAZ's and plating pierced? Helpful in perhaps momentarily erasing preconceived prejudice and discussing exactly what is shown with the application of free-thinking and logic?

There are not 1,000,000, or even 50 different ways to cause these specific type spots to consistently affect huge numbers of BU shield pennies. I believe that is quite a reasonable assertion that shouldn't be hard to concede as fact.

 

How hot does the drier get and how hot do the cleaned or rinsed planchets/blanks/stuck coins get while running through it?

 

Best of luck to you. No, I had this type of discussion with a "flat earth" theorist so I will keep my prejudice on a sound scientific basis. Quantum chemistry is enough free thinking for me.