Coin cleaning advice needed

Hello guys! I need some opinions on how to deal with those areas on my coin as I’m unsure about what should I use. Will acetone do the job without damaging the coin?

 

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Full pics. would be nice.

 

Acetone should not be a problem. It may or may not help remove the substance, IMO. Is the coin silver? Not familiar with these coins.
I recommend waiting for more members to chime in.

 

It's a silver tallero of Pisa.

 

There might be verdigris, which acetone won't help. However, it should remove any PVC residue, and any other organic compounds.

 

Lovely coin, acetone is a good start. Small glass container, cover the coin with acetone and let it soak an hour (longer if you want) with the container top covered since acetone evaporates quickly. Follow up with a rinse with hot water and then distilled water. Repeat if necessary.

 

OK, first of all, you never clean coins with ANY substance, chemical or solution as it diminishes the value immediately due to the outer layer being reduced or damaged by this process. If by chance you need to do something to read it or wish to polish a bit, I personally use a dry, white terry cloth washcloth with NO chemicals or anything and just lightly rub the coin on both sides and this will clean it and preserve the outer layer and not harm the coin at all.

If this is not enough and you plan to keep the coin in your collection forever, you could use a bit of toothpaste and warm water and this should clean it a bit more. Caution though, this process is not recommended to fully clean or polish a coin, it is merely to gain info you can't see otherwise.

Please be careful and good luck.

 

Cleaning coins properly is done all the time by collectors, dealers, and conservation services. Ruining coins is done all the time by collectors, dealers, and conservation services.

This is a very easy fix with a common chemical - not dip or acetone. Unfortunately, that is all I can say except it needs to be soaked overnight. I am not confident that the NCS guys know about this treatment as I stumbled upon it by chance. Therefore, I would not send the coin in to them and definitely not to PCGS Conservation. ICG conservation Service can fix it. Conservation alone (without grade/authentication) is $20 plus $25 return postage. Conservation with grading/authentication is $19 (foreign coin), $25 return postage, plus $5 more for conservation.

 

I most certainly agree with GD. Why clean a coin that looks that nice, seal it as is and enjoy it. Only my opinion good luck

 

There is no accounting for peoples "taste." Therefore, to each their own.

It looks like the OP and I don't like crusty, GREEN CORROSION PRODUCTS on our coins!

 

First things first, i want to thank you all for taking the time in sharing a thought, i appreciate! I guess it's a hard decision, because i don't want to cause any damage to it, since it's difficult to find one with such details and it's not a very cheap piece to be honest. I was/am affraid that the green stuff might extend in the future, since i never had coins with this issue before. I'm also curious about how are you keeping your silver coins ,personally i have some schulz coin trays, but i've recently tried(first time experiment) to store a few silver ones in a old wooden tobacco box and they started to get an interesting toning.
@DANIEL HENRIQUEZ I'm very aware of the cleaning issue and although i don't clean my coins, i have no problem with buying a cleaned one, because i just can't afford letting go a beautiful/rare taler for example, simply because it was cleaned in the past.

 

The deposits look like Verdigris, if it is, then it is inert and will not spread any significant amount in your lifetime.

 

I would leave it as is.

 

Possibly the worst advice I have ever seen on CoinTalk. Rinsing, dipping or soaking a coin in ANY pure, unreactive solvent will do no harm to the coin whatsoever, and the only "outer layer" that might be removed is contamination. However wiping a coin with a "white terry cloth washcloth", your finger, a microfiber cloth or ANYTHING else can move whatever is on the coin around and scratch the ....heck out of it!!! "Toothpaste" never, unless it might be an ancient.

 

If rinsing with distilled water, always gently pat the coin dry.

 

Yup, or let it drain and dry.

 

@PaulTudor you have a beautiful coin I wish I had, and I can respect your desire to preserve it in as good a state as you can for as long as you can. Acetone will not harm your coin. Distilled water will not harm your coin. Storing your coin in a dry, moderately cool place in a flip or hard case would probably protect it for the rest of your life or longer. If you wish to improve the appearance of the coin, the only thing I would suggest is a rinse with running hot water in the sink where you have placed it on a piece of cloth to protect from dings. Wash your hands and give it a turn so the running hot water can carry off any inorganic salts. I would then rinse it thoroughly with distilled water and either pat it dry (@Robert Ransom) or let it air dry. The acetone soak would be optional but wouldn't hurt it. If you decide to do any conservation, let us see how it comes out.

 

Please don't ever offer this advice to anyone ever again. Leave cleaning discussions to the experts. The only advice I ever give on cleaning comes from lengthy explanations given to me by chemists. Most of the time, I just tag them in the post and sit back to learn. Bad advice will ruin coins and interest in our hobby. God bless.