To dip or not to dip in acetone [solved]

Hello numista members,

I have a few coins in my collection that was passed down to me with heavy PVC damage like this.

Would dipping a coin in acetone like this damage its value or would leaving it in this state be better?

I have tried soaking it in acetone however it also didn't fully remove all the green patches how can I go about this with acetone?

Unfortunately what is done is done. The only thing left to do is to keep soaking in acetone and remove as much residue as possible with a Q-tip or other soft tipped tool. The damage already done to the coin is irreversible. Most importantly, keep all PVC residue affected coins away from unaffected coins. You are not alone in this unfortunate circumstance as millions upon millions of coins have fallen victim to the same fate to different degrees.

For a silver coin, at worst you can remove the patina with baking soda and create a new patina with an oxidizing solution.

Well, well, well, get out of here …

I wish a beautiful day to the young collector.

   Colleagues will be surprised - but I will not break this thin ice.

Chad | Young Aspirant Numismatisti
,,chadlimjinjie,,
Singapore
"Appreciates silver coin history and stacking silver for the next generation."

      A nice resolution, and if you want to fulfill it, you have to do something, otherwise you will leave only a pile of scrap for future generations.

Every decision is painful, and create a "cleaned" attribute for the coin.

I recommend:

      Take some sick coins and go to the center ,,Palenbangu,, -Somewhere in the "Duku" area ,find a goldsmith that has an ultrasonic jewelry washer , and arrange with him to clean the coins with ultrasound-I numismatic encyclopedia (bible) -approves, in the most necessary cases, the help of ultrasound to remove deposits.

In the future, you may be looking for a cheap and suitable ultrasound bath yourself- to buy:

https://www.google.com/search?q=mal%C3%A1+ultrazvukov%C3%A1+my%C4%8Dka&tbm=isch&ved=2ahUKEwj938jg2ZT9AhXdsCcCHYMkDa0Q2-cCegQIABAA&oq=mal%C3%A1+ultrazvukov%C3%A1+my%C4%8Dka&gs_lcp=CgNpbWcQAzoECCMQJzoHCAAQgAQQGFCvD1i_ImD1KGgAcAB4AIABT4gBygOSAQE2mAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=oFTrY_2PL93hnsEPg8m06Ao&bih=625&biw=1366&rlz=1C1NHXL_csCZ927CZ927

      Supporters of the conservative wing do not want to understand the fact how many coins are in fact irreversibly painted (try looking at the assignment,, bronze coins of ancient Greece and go from back to front) and who wants to see sees and who wants to hear hears.

      No demos, which I'm really sorry about, but if I showed anything, he'd beat me up in our sandbox.

I wish you much success in collecting.

Ivan

Acetone if 100% pure will do no harm. Should work well for PVC residue removal.

do not use Acetone which is not pure such as found in many nail polish which also contain many harmful chemicals for coins

I am not to sure if the other Chemicals in nail polish remover will harm your coin (you have to rinse your coin afterwards anyway). But yes the purer the less possible failure and who wants a fruity smelling coin?

Reagent grade acetone or isopropanol are both good organic residues removals. I sometimes use one bath of acetone followed by one bath of isopropanol to clean some coins. Acetone as well leaves some stains on coins and it is good to use some alcohol to wash it. Typically, both of these solvents will tarnish silver and make it dark unifirmly after a while and i dont use them for cleaning silver, because i never clean silver with anything other than soap and water. 

I can see no reaction of acetone with metallic silver especially not after there is no solvent left (it evaporates very fast). The only way I could think why discoloration could happen is that you expose a fresh area with high surface area that was covered in goop before which can now readily react with the atmosphere.

I didn't want to duplicate a thread - hence posting my queries here.

Similar sort of issue.

My old old album (unsure if archival grade ) . Probably filled with chemicals - I didn't know about this in the early 2000's.

Certain Copper Nickel coins like this one show a similar pattern of damage. Lines across the coin. This is the actual coin. N#5474

My coin - 

Similar album with the US quarter ( Copper-nickel clad copper) N#55

Looks like this -

Any advice / suggestions would be appreciated.

BluHawk

I didn't want to duplicate a thread - hence posting my queries here.

Similar sort of issue.

 

 

You should have opened your own thread. Having said that, The coins that you show are relatively modern low value coins. I will not judge whether either of these coins are suffering from PVC residue damage but it certainly won't hurt the coins by giving them a good soak in acetone. Whether it is effective in removing the PMD to your liking is anybody's guess. Give it a go and see what happens.

Thanks harryg

I see. thanks for all the responses so far. Would anyone recommend ultrasonic bath for the coins?

Have you tried Conserve Safe Coin Solvent?

I occasionally use it to get PVC and dirt of of my coin.

Here is a link to an Amazon listing  Amazon.com-Conserve coin solvent.