What is the best way to get rid of haze on a proof coin ?

bidask

pruebas

If acetone doesn’t work, try MS70.

TwoKopeiki

Ammonia

jgenn

Or you could just buy one without the haze

pruebas

If you have or can get 1,1,1-trichloroethane, you could try that as well.

bidask

@pruebas said:
If you have or can get 1,1,1-trichloroethane, you could try that as well.

Have you ever used soap and water ?

Sapyx

You can get rid of the "goo" that causes hazing, using the solvents stated above, but if the goo has been siting on the coin since 1970, then the surface of the coin is already damaged and there's nothing you can do about it.

If the problem is caused by the coin being in direct contact with an acidic surface (like that pseudo-velvet proof case lining the Franklin Mint used) then solvents aren't going to help; the damage is done.

Flatwoods

@bidask said:

@pruebas said:
If you have or can get 1,1,1-trichloroethane, you could try that as well.

Have you ever used soap and water ?

I have.
Good results and bad.
You never know.

pruebas

@Flatwoods said:

@bidask said:

@pruebas said:
If you have or can get 1,1,1-trichloroethane, you could try that as well.

Have you ever used soap and water ?

I have.
Good results and bad.
You never know.

Soap leaves a residue. Detergent would be better (like dish detergent).

ShadyDave

I'd use MS-70, that is what it was made for. Ammonia works well on coins with haze too. Make sure to rinse the coin off well, I keep gallon jugs of distilled water at home for this purpose.

neildrobertson

I'm not confident anything will make that proof pristine, but MS70 or ammonia would help a little. This is assuming you know how to do it safely (safe for you and safe for the coin).

Swampboy

@Sapyx said:
You can get rid of the "goo" that causes hazing, using the solvents stated above, but if the goo has been siting on the coin since 1970, then the surface of the coin is already damaged and there's nothing you can do about it.

If the problem is caused by the coin being in direct contact with an acidic surface (like that pseudo-velvet proof case lining the Franklin Mint used) then solvents aren't going to help; the damage is done.

I've seen the velvet and the damage done

GaCoinGuy

I have had success with a mixture of E-zest and distilled water followed by a rinse in pure acetone.

pruebas

@GaCoinGuy said:
I have had success with a mixture of E-zest and distilled water followed by a rinse in pure acetone.

EZest is an acid and will remove toning (as well as surface metal) from the coin. After all, it is coin dip.

I advise highly against using it for removing haze.

GaCoinGuy

Never used it on toners, just hazy proofs. Very weak mixture.....75% distilled water. Never had any issues with it. 2-3 second swish followed by a rinse in pure acetone.