Strange color on circulated copper - Is this acceptable?

I just picked up this post-Colonial 1795 Talbot token. When I got it in hand I noticed some very dark coloration around the center of the obverse. Is this considered market acceptable? It’s in a straight graded PCGS holder but I’m wondering if it picked up this pattern after being slabbed, perhaps resulting from a bad cleaning? It doesn’t look like corrosion or staining, just unusual.

I took a gamble as it was listed in the wrong category and didn’t have very good photos.

 

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I'd add her to my colonial/early US collection in a heartbeat
for a 200+ year old copper token, a little discoloration is kind of expected.. Unless of course you got one of those rare as hell MS coins of that age and even some of those will have discoloration...

 

Reverse looks great, exactly what you want. Obverse looks weird... not a fan. Don't know exactly what was done to it, but I don't like it.

 

Wish I had that coin in my early American collection.

 

Looks like acetate soak.

 

Acetone? I didn’t think that affected color or toning.

 

My experience is it depends how long the coin is soaked. I do just a bit more than a dip so as not to lose the patina and immediately soak in distilled water.

 

A coin dip takes seconds. Anything longer than that kills the coin.
A bath in acetone is safe for several hours. It won't remove natural toning. It will remove anything organic.
A dip and a bath are two different things.

 

Is the same solution used for a dip? I only use acetone.

 

I have the same question. I've seen "dip" referenced for years and still have no idea what it is.

 

“Dip” is an acid that dissolves a coin’s toning as well as metal from its surface, but acetone is just a solvent that only dissolves organic material.

Someone please chime in if this understanding is not correct.

 

thanks

 

Same stuff my wife keeps under the sink to dip her rings and such into. It is obviously very aggressive. I seen her dip a grimy piece of jewelry in that jar and take it out seconds later like looking spiffy new. This stuff. I won’t allow it in the same room as my coins.

 

I got a bottle of that myself... On the tool shelf with the other nasty chems. It does a great job on jewelry but will strip "antiqueing" as well as some enameling.. nasty stuff! not for use on coins in any way

 

So when I had my coins conserved by ANACS that's why they used? I'm having a hard time believing that.

 

I think it's this...

https://www.amazon.com/Z-est-Cleaner-Copper-Silver-Jewelry/dp/B07QSCJKG6

 

Thats a good question.