What caused this type of toning??

erwindoc · May 17, 2014 1:54PM

Specifically the bluish/green streak on the reverse.

1912 S Liberty Nickel

braddick · May 17, 2014 2:07PM

Looking at the gold hot pressed logo on the back of the NGC slab I'd venture the photo is ever so slightly tweaked and the green isn't as garish as it appears.

With that stated, I don't know what could/would cause that type of toning.

ms70 · May 17, 2014 2:28PM

Good question. I'm interested too.

MsMorrisine · May 17, 2014 2:34PM

It's in the slab shot

I see the weird color behind the holo, but the slab isn't off colored.

It's a worrisome color. Turned in the holder?

erwindoc · May 17, 2014 9:48PM

Up for the morning crowd...

darktone · May 17, 2014 10:00PM

Cool looking coin. I like it.

darktone · May 17, 2014 10:02PM

I think the toning is from the alloy mixture not being consistant and causing the streakyness.

darktone · May 17, 2014 10:05PM

Just noticed the cool die cracks. If the reverse and obverse cracks match up it looks like an off center strike too.

ricko · May 18, 2014 1:11AM

Based on past experiments and studying all sorts of tarnish, I would hazard an opinion that that tarnish is a contaminant residue.... Cheers, RickO

Patches · May 18, 2014 1:14AM

<< Based on past experiments and studying all sorts of tarnish, I would hazard an opinion that that tarnish is a contaminant residue.... Cheers, RickO >>

Years ago I found your anti-toning posts annoying...now they just crack me up

Keep 'em coming, your very consistent!

erwindoc · May 18, 2014 3:31AM

<< Based on past experiments and studying all sorts of tarnish, I would hazard an opinion that that tarnish is a contaminant residue.... Cheers, RickO >>

This is sorta what I was thinking too, but I have never seen something quite like it. I'm hoping some additional individuals will weigh in with their opinions.

lkeigwin · May 18, 2014 3:55AM

<< 

<< Based on past experiments and studying all sorts of tarnish, I would hazard an opinion that that tarnish is a contaminant residue.... Cheers, RickO >>

Years ago I found your anti-toning posts annoying...now they just crack me up

Keep 'em coming, your very consistent!

>>

Everyone knows rick hates toning. But I don't think that's what he's getting at here.

I don't like what I see on the coin and I wouldn't be surprised if it were a contaminant like PVC.
Lance.

Shamika · May 18, 2014 4:49AM

Looks almost like PVC.

Type2 · May 18, 2014 5:01AM

I see that here and there but i never can get it in a holder they come back QC but that is just me.

BustHalfBrian · May 18, 2014 5:46AM

<< Looks almost like PVC. >>

I agree

crazyhounddog · May 18, 2014 5:50AM

<< 

<< 

<< Based on past experiments and studying all sorts of tarnish, I would hazard an opinion that that tarnish is a contaminant residue.... Cheers, RickO >>

Years ago I found your anti-toning posts annoying...now they just crack me up

Keep 'em coming, your very consistent!

>>

Everyone knows rick hates toning. But I don't think that's what he's getting at here.

I don't like what I see on the coin and I wouldn't be surprised if it were a contaminant like PVC.
Lance. >>

I 100% agree!! Don't like what I see !!!!!!!!!!!!!!

veryfine · May 18, 2014 6:08AM

An "original" undipped 12-s nickel is often an eye-appeal nightmare. Although this specific pattern of color seems a bit odd, I am not surprised, given the typically negative characteristics of this date. Many 12-s nickels have a bluish or streaky copper appearance. Despite the so-called "problems", this particular example has a superb strike and positive appeal.

erwindoc · May 18, 2014 6:57AM

Here is a different view with different lights. Not my photos by the way.

lostincoins · May 18, 2014 7:34AM

If this last pic were presented as an AT? post most would say it is AT because the color is consistent on all elevations. Looks like something spilled on it and I do not like it.

lkeigwin · May 18, 2014 8:32AM

Reminds me of some green stuff I found on a bust half once (lower right wing). Not everyone agreed what it was but I had PCGS conserve it. I believe it was PVC.
Lance.

What caused this type of toning??

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