| Author |
 Replies: 13 / Views: 1,654 |
|
|
Bedrock of the Community
 United States
18673 Posts |
I have this Three Cent piece in my collection for decades. when purchased it had beautiful blue/green and purple toning. it was stored in Whitman 9434 folder since it was purchased. the toning has now moved to black. I understand that this is the progression of toning over time but does this affect value due to eye appeal or how would a TPG interpret that. how about collector value or would this stop one from purchasing it. I also have an 1837 NS dime that did the same thing. you can still some of the original blue/green toning on its obverse. what are your thoughts on both of these?     |
|
|
|
Bedrock of the Community
United States
94367 Posts |
How unfortunate. No question this kind of tarnishing detracts from the eye-appeal and therefore the value.  |
|
Pillar of the Community
United States
4469 Posts |
The Three Cent pieces are very hard to find with attractive toning. I am not sure why, but they typically tone ugly. The coin has lost value because of the toning turning black. Most collectors stay away from purchasing coins with black toning. The issue with terminal black toning is that it will etch the surface of the coin, and there is not a lot that can be done. If the terminal toning is removed with a dip, the coin will show the etch surface. If the terminal toning is left alone, it continues to eat away at the coin surface. I own a couple of black beauties, but I did not purchase them on purpose as I was misled by the online photos. |
|
Bedrock of the Community
 United States
18673 Posts |
this coin was purchased before I knew about how coins toned over time. this is why I dont buy toned coins. According to ANA all toning eventually moves to black once it passes through those beautiful tones. when I bought the coin some 30+ years ago and it was beautiful then. maybe if I knew then I would have slabbed the coin (not sure that would have helped though). I have the coin at AU55 and not other issues other than that toning.  toning sequence 1. Yellow 2. Brown 3. Blue 4. Red 5. Green 6. Purple 7. Black Edited by panzaldi
05/14/2022 08:29 am
|
|
Pillar of the Community
United States
4469 Posts |
Putting the coin in a TPG holder most likely would not have stopped the toning progression, but could have slowed down the progression. I have a 7070 PCGS registry set of toners, and some of the coins are already getting darker after about 3 or 4 years. |
|
Pillar of the Community
United States
3655 Posts |
Quote:The Three Cent pieces are very hard to find with attractive toning. I am not sure why, but they typically tone ugly.  Really good observation. I can't recall seeing many eye appeal threes over the years, either. |
|
Bedrock of the Community
United States
36780 Posts |
Poor eye appeal but in many cases this tone also comes with environmental damage.
|
|
Pillar of the Community
United States
1694 Posts |
Bummer . I personally would look for one that is not toned but can not speak for others .
|
|
Pillar of the Community
United States
1694 Posts |
If all toning progresses to black and becomes damage why would a TPG grade a toned coin? |
|
Pillar of the Community
United States
4469 Posts |
Quote:If all toning progresses to black and becomes damage why would a TPG grade a toned coin? Keep in mind that TPG's are a business and they make money grading toned or untoned examples. There is a strong market demand for attractive toned coins. The environment that the coin is stored in, contact with sulfur, metal type, metal composition, plays a part in the progression of toning. |
|
Pillar of the Community
United States
1694 Posts |
Slider that's my thought to thanks
|
|
Moderator
 Australia
16834 Posts |
Quote:If all toning progresses to black and becomes damage why would a TPG grade a toned coin? Toning on silver coins only progresses when exposed to additional sulfur in the atmosphere. Putting a coin in a slab or other air-resistant container will minimize this exposure, and thus minimze the amount of change that should happen to the toning. It can't stop it completely, since no slab is perfectly airtight, but it should slow it down to the point of being unnoticeable in a human lifetime. Thus, a slab, when itself properly stored away from sources of sulfur, should keep toned coins from noticeably changing. Unfortunately, the Whitman and similar cardboard folders were abominable at preventing the encroachment of sulfur; not only are the coins in the folder still exposed to the open air, but for some brands the cardboard itself is not sulfur-free; sulfur gradually leaches out of the cardboard and onto the coins, over time. Quote:
toning sequence
1. Yellow
2. Brown
3. Blue
4. Red
5. Green
6. Purple
7. Black The colours of toning are caused by thin-film interference - the same optical effect that causes colour to appear in soap bubbles, and on oil slicks. The "thin film" in this case is a microscopic layer of silver sulfide that has been chemically created on the surface of the coin by the silver metal reacting with atmospheric sulfur. The colour gradient thus follows the same progression as the colours of the rainbow: red, orange, yellow, green, blue. The colour after blue is black rather than "indigo", because at that point the "thin film" of silver sulfide becomes too thick to transmit light, and silver sulfide is naturally black in colour. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
|
|
Bedrock of the Community
United States
11896 Posts |
I find the toning attractive and makes the coins look like ti has nice original patina. Your buyer will have to be someone who is knowledgeable rather than someone who wants bling.
IN NECESSARIIS UNITAS - IN DUBIIS LIBERTAS - IN OMNIBUS CARITAS THE MAN IN THE ARENA, Theodore Roosevelt at the Sorbonne Paris on April 23, 1910: " It is not the critic who counts; not the man who points out how the strong man stumbles or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly, who errs and comes up short again and again, because there is no effort without error or shortcoming, but who knows the great enthusiasms, the great devotions, who spends himself in a worthy cause; who, at the best, knows, in the end, the triumph of high achievement, and who, at the worst, if he fails, at least he fails while daring greatly, so that his place shall never be with those cold and timid souls who knew neither victory nor defeat." My coin website: https://fairfaxcoins.com |
|
Bedrock of the Community
United States
36780 Posts |
Nice bulls eye rainbow toning is something I really like. Blotchy dark to black is something I have never seen as appealing. Eye appeal is important.
|
| |
Replies: 13 / Views: 1,654 |
|
Posted 05/11/2022 11:34 am
