Salt River improperly annealed.

Q-tip dipped in eZest and rolled around the edge.

 

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I can't tell for sure what the exact color the op's coins are in the photo. If you put a real improper annealed coin next to a environmentally toned one there is a noticeable color difference in them. The toned ones will be a golden color and the improper annealed one is more like a real copper color usually with some black spots associated with the copper color. I have some slabbed ones here somewhere but I have forgot where I put them. I'm just getting too old to keep up with things.. lol

edit;
Our new coins will tone super fast compared to our older coins for some reason . I'm blaming it on the wash the blanks goes thru , but darn if I know for sure what causes the problem.

 

With improper annealing it really depends as far as color goes. Some do take on a copper color, some take on a grey color towards black like the "black beauty" nickels. Some are light, some are dark. It all depends on the situation, what the contaminant is in the annealing process and how long it was there for. I believe the color has to do with copper or nickel dust in the annealing chamber and slack annealing chamber cleaning practices at some points, while other instances possibly coins left behind and annealed twice without a cleaning step, also possibly left to run too long. Improper annealing is an all encompassing term for anything that goes wrong in the annealing step, the causes can be many.

And old coins tone just as fast as new coins given the right conditions for toning. The fact is the old coins have been cleaned/dipped in most cases or simply stored in proper conditions to inhibit toning and left alone there.
A 100+ year old silver coin shouldn't be blast white. If you look at pictures of the top rarest collections of the most known collectors they all have original, toned surfaces. None of their coins look like they were just minted yesterday. We didn't have the conservation and anti toning methods we do now back then. Felt lined wood cabinets, and sulfur coated paper holders and envelopes, then vinyl flips... most all older coins you see have been dipped if they aren't toned. The fad in the hobby of having untoned coins is why so many have been dipped.

Doesn't mean it's bad, depends on how it was done, just saying an old coin should have toning, its the natural progression, unless it's been held in a desert cave in a jar with the dead sea scrolls.

 

Just to clarify, copper and Nickel dust do not cause the color change on improperly annealed coins. At one time, this was an excepted explanation, but it has been shown that Improperly Annealed coins are due to heat, time, and/or an incorrect atmosphere in the annealing furnace that causes metal atoms to segregate from the alloy.


Attached is a good explanation from www.error-ref.com

http://www.error-ref.com/?s=improper+annealing

 

Here's a few of mine .

 

Better explanation and a bit more scientific that I was capable of for sure. good read old hoopster.

 

Yes, I believe I could tell the
difference.

 

Somehow I don't doubt this.

 

Was received September 17th and finally have been graded. Should have them next week. Two from original photo.

 

Congratulations! @Mark68 and good eye on the find and sticking to your guns about it.