protecting Mint sets

[leprecoin]

Hi.

many of the mint/proof sets Im buying have some of the coins tarnishing,

many of the copper coins have black spots, etc.

 

I was thinking to open those sets, then aceton "bath" them and slide it into 2x2 mylers (those with the stamples)

 

I dont like breaking up those sets, and hate not to have them in the original country display, but i will hate even more to see them keep tarnishing.

 

I wonder if you think that is a good idea.

and would like to know what are you doing to protect those world sets which comes in many diff packging styles.

 

Thx, Me

[EZ_E]

Ooh, tough call.

 

Personally, I would not break open the sets.

 

An option is to have NCS (or yourself) conserve the coins and then get them slabbed in the new NGC multi-coin holder (once their pricing comes down and they get their policy ironed out).

[spiny]

I've removed a few of mine from their original packaging, if that packaging had potential of causing damage to the coins like the many PVC laden holders used in the 70s. The latest was a Japanese set that had already had a pretty thick layer of the green slime on them. The PVC was easily removed with acetone and the coins are undamaged. If I would have left them in there it would eventually have ruined the coins.

[TomB]

Acetone won't remove the type of toning spots I believe you are writing about.

[kuot-migration]

What cleaning agent can then those spots? Or is it better not to remove them at all so as not to degrade the coin value?