@Barberian said:
Thanks! It's sitting on my scanner now, so I'll give it a dip later this evening to see what happens color-wise. Hopefully I get the kind of results you had with your nice looking 1820.
@Barberian said:
There is no green on this coin. It must be the camera or photo editing setting.
Oh, sorry about that. The first picture looks like it's covered in green pvc slime.
There was green on the coin. Here is a before/after layover of the acetone dip. Definitely took off the PVC residue.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
I also need to get some mineral oil for removing the black crud and some cupric salts still stuck to my 1846-O Tall Date half dollar. CACG bagged it for PVC, though it has been soaked in acetone for hours. They see the crud and the crystals and immediately reject it. Odd, because my CAC Hall of Shame is filled with CAC graded coins with cupric salts and other signs of corrosion on them.
.
My 46-O tall date after extensive soaking - there are still some green crystals and black crud between the reverse dentils
.
The Bender 1874-CC graded MS64 w/ CAC green - for sale for $68,300.
@Barberian I swirl the acetone in a jar while the coin sits at the bottom, so the agitation of the liquid loosens PVC. Stuck PVC can be tricky to remove. For those tough to remove materials, I use a porcupine quill under a microscope, along with coin conditioner or other safe oil based substances to loosen the material. Acetone to get the oils off afterwards on silver coins.
Anything not PVC, such as dirt, light grime, things stuck around the stars, I leave where it is. Keeps the "crusty" look, and there could be unpleasant discolorations upon removal. I am surprised your 1846-O won't get into a holder! Stuff remaining in the dentils can usually get a "good enough" pass at the TPGs.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
@jacrispies said: @Barberian I swirl the acetone in a jar while the coin sits at the bottom, so the agitation of the liquid loosens PVC. Stuck PVC can be tricky to remove. For those tough to remove materials, I use a porcupine quill under a microscope, along with coin conditioner or other safe oil based substances to loosen the material. Acetone to get the oils off afterwards on silver coins.
Anything not PVC, such as dirt, light grime, things stuck around the stars, I leave where it is. Keeps the "crusty" look, and there could be unpleasant discolorations upon removal. I am surprised your 1846-O won't get into a holder! Stuff remaining in the dentils can usually get a "good enough" pass at the TPGs.
I do swirl acetone around the coin in a glass jar and use cat whiskers under a dissecting scope and roll Q-tips on the surface to remove material from the coin. I don't know what "coin conditioner" is. Tell me more about coin conditioner and what it is supposed to do for coins. If it affects the color of the coin, I won't use it. I understand olive oil is slightly acidic and can discolor a coin, so I don't use olive oil either. I've heard mineral oil and a fine paint brush are good for removing crud from coins after a long soak without discoloration and plan on getting some soon after reading another recommendation for using mineral oil.
.
The fuzzy black dirt on coins and on this coin before it was treated is not good. It is part of the problem IMO, and when removed, usually leaves bright etched and pitted surfaces. I'm using quality dissecting scopes to examine these coins.
.
I have acetone treated and, in some cases, picked or rolled off crud with a Q-tip for several dozen coins and have had no trouble getting coins straight-graded in TPG holders. This 1846-O Tall Date has been a project for me, with lengthy soaks and picking with cat whiskers. Much of the crud came off after these long soaks (several hour-long soaks). The obverse color hardly faded at all. The reverse shows some loss of color. I hope that the remaining salts that are still on the coin are the reason for their reluctance to grade it. That's why I want to try mineral oil to get more crud off the coin. Most of it is gone now.
.
My 46-O TD still has tiny green salts in the dentils and around the tail feathers. CACG will not grade it as is right now. It's odd because I have photos of coins they've graded with cupric salts on the surfaces. I just received a graded coin from them that shows "white spots with black dots" all over the coin. IMO, this is corrosion and pitting.
This what it looked like when I purchased the coin.
.
Here's a recently graded CACG 1853-O in VF20 - note the white spots with black dots, representing etching and coalescing of foreign material into a dark dot that sits atop or represents a pit. The obverse white band with spotting from the foot to the cap, as well as the white spots and areas around the devices is not a good thing, IMO.
.
I am very welcome to any corrections or suggestions to what I wrote here and what I am doing to restore this scarce, valuable coin to a gradable condition.
@Barberian Coin conditioner is meant to be the same as Blue Ribbon. Meant for verdigris on copper coins. No special secret for use on silver, it is just an oily substance that loosens material from the surface. I'm just sure to acetone the oil off since silver doesn't need conditioning.
Oh, well CACG is all over the place. I can't justify CACG's actions about detecting micro elements on the coins, they are inconsistent with their grading. I can speak with experience for PCGS and NGC, and I would expect an easy straight grade.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
Comments
The green isn't coming off?
Did we forget commemorative half dollars?
There is no green on this coin. It must be the camera or photo editing setting.
Oh, sorry about that. The first picture looks like it's covered in green pvc slime.
There was green on the coin. Here is a before/after layover of the acetone dip. Definitely took off the PVC residue.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
I like being proven wrong here. Thanks! I'll be dipping more coins today as a result of your post.
I also need to get some mineral oil for removing the black crud and some cupric salts still stuck to my 1846-O Tall Date half dollar. CACG bagged it for PVC, though it has been soaked in acetone for hours. They see the crud and the crystals and immediately reject it. Odd, because my CAC Hall of Shame is filled with CAC graded coins with cupric salts and other signs of corrosion on them.
.
My 46-O tall date after extensive soaking - there are still some green crystals and black crud between the reverse dentils
.
The Bender 1874-CC graded MS64 w/ CAC green - for sale for $68,300.
@Barberian I swirl the acetone in a jar while the coin sits at the bottom, so the agitation of the liquid loosens PVC. Stuck PVC can be tricky to remove. For those tough to remove materials, I use a porcupine quill under a microscope, along with coin conditioner or other safe oil based substances to loosen the material. Acetone to get the oils off afterwards on silver coins.
Anything not PVC, such as dirt, light grime, things stuck around the stars, I leave where it is. Keeps the "crusty" look, and there could be unpleasant discolorations upon removal. I am surprised your 1846-O won't get into a holder! Stuff remaining in the dentils can usually get a "good enough" pass at the TPGs.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
I do swirl acetone around the coin in a glass jar and use cat whiskers under a dissecting scope and roll Q-tips on the surface to remove material from the coin. I don't know what "coin conditioner" is. Tell me more about coin conditioner and what it is supposed to do for coins. If it affects the color of the coin, I won't use it. I understand olive oil is slightly acidic and can discolor a coin, so I don't use olive oil either. I've heard mineral oil and a fine paint brush are good for removing crud from coins after a long soak without discoloration and plan on getting some soon after reading another recommendation for using mineral oil.
.
The fuzzy black dirt on coins and on this coin before it was treated is not good. It is part of the problem IMO, and when removed, usually leaves bright etched and pitted surfaces. I'm using quality dissecting scopes to examine these coins.
.
I have acetone treated and, in some cases, picked or rolled off crud with a Q-tip for several dozen coins and have had no trouble getting coins straight-graded in TPG holders. This 1846-O Tall Date has been a project for me, with lengthy soaks and picking with cat whiskers. Much of the crud came off after these long soaks (several hour-long soaks). The obverse color hardly faded at all. The reverse shows some loss of color. I hope that the remaining salts that are still on the coin are the reason for their reluctance to grade it. That's why I want to try mineral oil to get more crud off the coin. Most of it is gone now.
.
My 46-O TD still has tiny green salts in the dentils and around the tail feathers. CACG will not grade it as is right now. It's odd because I have photos of coins they've graded with cupric salts on the surfaces. I just received a graded coin from them that shows "white spots with black dots" all over the coin. IMO, this is corrosion and pitting.
This what it looked like when I purchased the coin.
.
Here's a recently graded CACG 1853-O in VF20 - note the white spots with black dots, representing etching and coalescing of foreign material into a dark dot that sits atop or represents a pit. The obverse white band with spotting from the foot to the cap, as well as the white spots and areas around the devices is not a good thing, IMO.
.
I am very welcome to any corrections or suggestions to what I wrote here and what I am doing to restore this scarce, valuable coin to a gradable condition.
1807-1839
Vi Veri Veniversum Vivus Vici
BHNC #253
Wayne
Kennedys are my quest...
Dates like fam member bd
What about anniversaries in NGC holders?
chopmarkedtradedollars.com
@Barberian Coin conditioner is meant to be the same as Blue Ribbon. Meant for verdigris on copper coins. No special secret for use on silver, it is just an oily substance that loosens material from the surface. I'm just sure to acetone the oil off since silver doesn't need conditioning.
Coin conditioner: https://www.wizardcoinsupply.com/classic-coin-conditioner?srsltid=AfmBOop9bNFp0rMKtQSvKSS6SoO_J2ytmbavDCpeqmUNRDApbFMXMUQl
Oh, well CACG is all over the place. I can't justify CACG's actions about detecting micro elements on the coins, they are inconsistent with their grading. I can speak with experience for PCGS and NGC, and I would expect an easy straight grade.
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
Here are some newp bust halves—
(Look at this strike!!!)
"But seek ye first the kingdom of God and His righteousness and all these things shall be added unto you" Matthew 6:33. Young fellow suffering from Bust Half fever.
BHNC #AN-10
JRCS #1606
I have one on the way that has, for some reason, made a detour to Kansas. I live in Michigan. We'll see if it ever arrives.