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Message:: [QUOTE="GDJMSP, post: 3110060, member: 112"]MS70 is a great product - for certain things ! But only those things. If you are a collector of modern coins, and that is to be read as clad coins, it works great to remove haze from modern Proofs and make them look their best. It has a similar but to a slightly lesser degree of effect on modern business strikes. On older coins, gold, silver and nickel, it can be helpful at times but to an even lesser degree. DO NOT use it copper - period ! MS70 will turn copper blue or purple - and pretty much everybody who knows coins knows it and will recognize it. Don't use it to try and remove PVC, don't use it to remove ordinary dirt and grime, don't use it on toned coins, don't use it to try and remove glue, etc etc etc. Put in simplest terms, if you have a modern coin that looks good, sometimes using MS70 can make it look even better.[/QUOTE]