what could cause this charcoal halo on this 2006 quarter 0

[Greenland]

[JKK]

We call that "toning." Something that sat in contact with the Cu/Ni surface long enough to tone it up in this unfortunate, unattractive, and non-value-adding way. Many substances could have done that; Cu/Ni can easily tone up dark.

[Greenland]

well i think its pretty cool.. but i think from your tone you think it won't sell??? 

 

[JKK]

Some toning is considered attractive; some isn't. I think very few people would pay US$0.26 for that coin because grey/black toning doesn't generally get a premium. Of course, you are not bound by anyone else's notion of attractiveness. Mainly I answered the thread just to offer you some vocabulary expansion on how we normally term that phenomenon.

[RonnieR131]

I think it looks as if picked up off a motorcycle repair shop floor, not too good. My son behind me said he likes it and thinks its cool. See if you can sell it G, there's bound to be a 100 more people that perceive its looks just like you, and good luck!

[Greenland]

i am very thankful for all your help.. you have all save me a lot of money on grading.. i have more to put up.. again thank you all

[kbbpll]

I've seen them almost completely covered in that charcoal color. I toss them in the change jar. If someone out there finds them and can make a buck on it, it's fine with me!

[Kirt]

My experience too - the statehood and later quarters show up with that charcoal toning with some regularity. Some are almost black.