Is my half dollar toned or just doomed?

It doesn't take much ammonia to ruin a coin.

But it will remove haze on clad coins. Be sure to experiment before using it.

 

Log in or Sign up to hide this ad.

No further comment required.

 

I might not have been clear. In my experience even tiny amounts of ammonia can ruin the luster on coins.

I've never tried it with soap.

 

UTube is full of misinformation.

 

I would not break them out if they were mine. So I'll ask, why do you want to break them out? What do you hope to gain? They look nice and they are protected so I'd let them me.

 

Better to leave the nasty haze then clean them. Ammonia will damage the surface of the coin, especially a proof.

 

You have probably ruined your coin already. I don't wish to encourage you further with any suggestions EXCEPT reading the posts about removing haze from proofs in the CT archives and the correct method.

 

The good news is that you can replace that set for $5-$10. At least you can experiment with how not to treat your coins and not lose the rent money while doing it.

 

Chances are it picked up that haze from the cheap material used in the basement grader that slabbed it.

 

And the more you handle them the more likely they will get hairlines and fingerprints.

 

This wasn't a NNC slab, it's INB (International Numismatic Bureau), which is even WORSE.

 

Haze on Proof silver coins is the one thing for which MS70 (the product) is good. It won't make your coin PF70, but it will get rid of the haze.

 

Olive Oil (EVOO) is more effective for loosening surface crud on old copper coins - I don't think it will have any positive effect on your JFK half - the more you dip, wash and clean your proof coin , the closer to face value it becomes - less is better

 

Are you storing your coins in a humidity controlled environment? I suffered a similar fate, before correction.

 

There is a lot of opinion in this thread that make me think I'm on YouTube.

For example, may we please see a "before" and "after" of a silver coin "ruined" with ammonia?

 

Whoa..."dipping" a coin in acetone is not what is normally referred to as dipping. The dipping referred to is using something like eZest. Dipping your coin in acetone did NOTHING to harm it...now sudsy ammonia...hmmm, I would say don't do it. Put it in a flip and stop.

 

I don't crack any of my sets but that's your option I would keep as is .that grade is a joke in my opinion for the half dollar that dipping ruined the coin as far as I am concerned. don't use u-tube talk to the coin forum there are lots of collectors that would give better advise

 

I've used a solution of 50% distilled water and 50% ammonia and had very good results on hazy proof coins. After dipping for only a few seconds, rinse well in distilled water, then pat dry with a soft cotton cloth{no rubbing!}

 

Olive oil is for ancient coins.
You may try 100% acetone again, and rinse with distilled water, it should not
hurt the coin. I doubt this is PR-70. It's prob a 66 or something. And now it
may have been damaged. Fortunately, it was never really a valuable coin.

 

INB is known for grading way too high and that foam they use probably off gasses and caused the coin to look like it does. I hope you can restore it to your liking or sell it and get another from a better TPG.
https://www.cointalk.com/threads/grading-service-inb.177613/