I usually use silver jewelry dip, ( on junk bullion coins) and seems to really clean them nicely.I don't think it will damage your coin at all. You will lose your original packaging ,but you can get INTERSEPT 2x2"S with the tarnish proof insert from EBAY or Lighthouse coin supply.
I've had great luck with 50% solution of clear ammonia and water dip followed by a distilled water rinse and distilled water rinse and dried with a hair dryer. 90% success rate brings them to a full brilliant black field.
THAT squares PRECISELY with what I was taught a little under a year ago in an ANA grading class. He said "soapy ammonia", followed by enough rinsing to dry a lake.
MEK is a liquid solvent used in surface coatings, adhesives, printing inks, chemical intermediates, magnetic tapes and lube oil dewaxing agents. MEK also is used as an extraction medium for fats, oils, waxes and resins. It is a highly efficient and versatile solvent for surface coatings. (Copied from Google search result)
If you are going to keep them in OGP, they are going to cloud eventually. I have no trouble removing it though.
Wow, I might end up the ONLY guy EVER who owns a bottle of E-Z-Est solely for blue haze Ikes. I won't use it for routine "dip" jobs; I'm too satisfied with the Kodak formula for that.
I agree with GD. I have no stains on mine. Is this silver, ikes or all proofs in general. I have quite a few proof set in un opened packaging. The few that were open look like todays proofs. Have an open package of multiple 96s prestige olympic sets. They look great. Is this packaging different. Or is it to early to tell
The PRIMARY series affected is 40% silver proof Ike dollars in the so-called brown pack - 1971 to 1974. They were single-coin packs, not in a set.
Bring on the chemicals! Actually the only coins I have dipped were a Brown Ike and a silver round. If I think I can restore something I will use acetone usually. This thread has inspired me to get some more eZest and experiment on another 71 Brown Ike. I am hesitant to try it on one of my 73 Brown Ikes because those cost much more.
I'm glad they used a different type of plastic for the GSA Carson City dollar selloff. Could you imagine the problems with deciding to keep a coin in the GSA holder or not?
I had a guy selling a nice uncirculated early commemorative half tell me that all it needed was to be dipped in Tarnex to take the toning off of it.