21' Peace Dollar. Not sure what to do?

Question ? How do they clean the coins from sunken treasure ?

 

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Don't put the lid on hydrogen peroxide real tight. It will build up pressure and blow the lid off. Just cover it. I still like the jewelry dip that Walmart sells for coins like yours. A few seconds and it is done.

 

Not much change after 12 hrs in distilled water.
Off to the Acetone bath.

 

I'd try acetone first but for $27.00, I'd have bought it myself.

 

The hydrogen peroxide would "eat" off any organic material that is on there...hmm, might be a good treatment for PVC sludge.

 

I would use acetone and see what you have at that point. No rubbing.
I think a dip is going to kill the coin if you don't know the proper way to go about it.

 

Dips are tricky, I've found (to my detriment)

 

It is tricky and not all coins need the same process. Just a few seconds in full strength dip can kill all the luster the coin has.

 

...and if it is worn enough to not have any luster, the dip can make it appear washed out.

 

I just go straight to acetone, soak overnight; if the acetone looks murky I give a second long soak in fresh acetone, rinse under hot tap water, then distilled water.
I don't understand using H2O2. also a pre soak in plain water seems unneeded as acetone will remove hydrophilic and hydrophobic stuff, as I understand it

 

A soak overnight in Acetone. produced some results but not as I expected. The thick green and pink is minimal, but it still covers the whole surface. I am gonna try another soak today... Hopefully I don't have to resort to a dip.

MS70? Would that be an option?

 

Beats using mayonnaise.

 

Something just occurred to me... There are many people on here who kind of spaz-out about using acetone, what with adequate ventilation, using tongs, etc. One of the uses for acetone is fingernail polish remover. Now this can come scented, colored, or with stuff like lanolin added to keep it from drying out your skin, but the point is, it is used for people to put on their bodies, so don't make it out to be the most dangerous chemical that ever existed.

 

In many ways I'm like Gus from My Big Fat Greek Wedding. Use Windex...LOL

 

Well, we're talking about using ounces of the stuff to soak coins in ; the fumes are toxic and it will explode in an instant around heat,spark or a flame. A few ml's on a cotton ball are used to remove nail polish. I put acetone in a pyrex dish, put in the coin, cover with a flat glass dish. When done I take out the coin and rinse it, keep the dish covered till I carry it outside and throw the stuff out. Evaporates instantly.

 

After another all day soak in Acetone it did almost nothing. I am now wondering what to do next. I am starting to think she will go into an album as is. It is a little better, but that is about it.

 

I don't think the hydrogen peroxide is a good idea. It can make coins appear unnaturally white. I wouldn't want to convert a 1921 which is one of the key dates in the set to melt value because of a botched cleaning attempt.
IDK but I assume if it is diluted and just used very briefly, it could help,
but you would already have to have experience with this method and not be using this coin as the practice piece.
As for acetone fumes, I use a glass jar with a lid, the fumes are minimal.

 

Fart fumes are toxic. the fumes from a dish are probably less than the fumes from a cotton ball soaked in the stuff, and it is being applied to nails and skin. BTW, rubbing alcohol is as explosive as acetone.

 

Place a cloth in the sink and run the water until it is as hot as it is going to get. Put the coin on the cloth and let the hot water play on it for 30-60 seconds (or longer) flip, repeat. Distilled water rinse and pat dry. Can't hurt.

 

Keep it as a pocket piece for about a month