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 Replies: 31 / Views: 4,190 |
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Bedrock of the Community
United States
12437 Posts |
the 1997 had the zinc core partially melted
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Valued Member
United States
247 Posts |
Whatever it is I like it! I'll give you the super fantastic deal of 100x face value for it  |
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Pillar of the Community
 Canada
1161 Posts |
Quote:
I'll give you the super fantastic deal of 100x face value for it Thank you for the generous offer. :-] No real desire to get rid of it...just curious as to what exactly it is. So far it seems that Struck through something. |
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Pillar of the Community
United States
2737 Posts |
I agree that the coin that started this thread is a "struck through" error. I'm confident that it's not "grease", but beyond that it's impossible to determine the nature and origin of the foreign material. That's typical of most struck through errors, which are endlessly variable in size, shape, texture, and depth.
Error coin writer and researcher.
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Valued Member
United States
105 Posts |
Nice coin! Gotta love those freaky errors that are hard to figure out!
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Pillar of the Community
Canada
1161 Posts |
Thank you for all the input. I guess my only other questions are value and storage. Is there any amount of premium value to the coin? Should I keep it in a 2X2 flip, in a air tight capsule or something else? I currently have it in a 2X2 flip.
Thank you again for all the input.
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Pillar of the Community
United States
3592 Posts |
Defintely a keeper and a premium for this one. Storage is up to you but when I store BU coins,I give them a rinse in acetone to prevent fingerprints from showing up later.
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Pillar of the Community
Canada
1161 Posts |
I have never used acetone on a coin before. Just put the acetone in a container and dip the coin in? Should I let the coin soak in the acetone for any particular time. I have worked with acetone in the past and understand the precautions that are needed for using it. I would imagine the acetone would evaporate from the coins surface fairly quickly after it is removed.
Thank you for any info.
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Pillar of the Community
United States
601 Posts |
Cladhunter- Try practicing on low value coins. There are a couple of ways that I use acetone, depending on the severity of gunk or organic build up.
Method one is with a Q-TIP BRAND swab- specifically this brand- because they use pure cotton fibers and the stick that the swabs are on is made of paper, cheaper brands will use plastic which will melt when in contact with acetone, leaving a bigger mess on the coin than what you were trying to get off. Dip the Q-tip in acetone and gently swab the coin in a tight circular motion. If dealing with a proof coin, be extremely gentle, or you will end up with obvious hairlines- method #2 may be safer in most cases for proofs. Yes- the acetone evaporates off of the coin very quickly and with it comes oil, dust and dirt, and any synthetic pollutants.
The second method is to soak the coin. Use a glass container of course. For very heavy build up you can let the coin sit for up to 24 hours, then remove and pat dry with gauze pads or a Q-tip.
I have found that acetone is safe for copper, silver and copper-nickel clad coins. It simply removes surface debris to reveal the attractive original coin beneath. TPGs do not frown upon the use of acetone either, it's been a well accepted practice for years. You said you're familiar with the precautions necessary, but for those who aren't- always use in a well ventilated area (small fan works perfect). And NEVER use acetone near a cigarette or open flame! It's highly flammable and will burn down your house!
Sorry to change the direction of the thread, but the OP asked. I think further questions should be put in a new thread. Hope I could help.
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Pillar of the Community
United States
3592 Posts |
Agree with above post except that I make a quick dip and swish around.I see no need to soak in this case as we are only trying to remove invisible oils left by your fingers.I made a pair of tweezers especially for this purpose that have the ends of Q-tips covering the metal.
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Pillar of the Community
Canada
1161 Posts |
Thank you for the information on how to use the acetone. I will pick some up this week. For the coin in this post I think a quick swish in the acetone will be enough as there is no buildup or any other substance on the coin. I just want to insure there is nothing on the coin that will affect it in the future. I appreciate all the advice. Thank you.
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Bedrock of the Community
United States
10045 Posts |
Quote:
the 1997 had the zinc core partially melted Given the rounded, fluid surfaces...I suspect the same for the '99. Very localized heat, perhaps cleaned afterwards or heated in a noble gas. |
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Bedrock of the Community
United States
10045 Posts |
Oops--I totally missed Mike Diamond's comment above--I stand corrected. |
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Pillar of the Community
Canada
1161 Posts |
All comments are appreciated. After your comment I went back and looked at the coin again. The coin did not look like it had been melted but I'm a noob and do not have enough knowledge to dispute your opinion. I'm glad to see that you agree with Mike as well. I can quit scratching my head staring at the coin.  |
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Pillar of the Community
United States
3592 Posts |
Quote:
Oops--I totally missed Mike Diamond's comment above--I stand corrected I was wondering...  |
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Posted 04/04/2011 7:18 pm
