I would leave the 1952 and 1961 as they are but the one on the right, the 1964 i would place in clear vinegar for a day or two. It cannot harm it more than that and if you are going to sell it for melt, the vinegar will not decrease the value by any means.... but this is just my opinion :smile
BTW I like the toning of the 1951 very much, and i will be very happy to add these to my collection :smile
Corrosion is caused by exposure to oxygen. Maybe the corrosion could be reversed if a coin is exposed to another gas that would break up corrosion, while leaving the metal unharmed?
This particular batch came from my aunt. I've had them in a sack in a closet. I don't know how she had them stored though.
I'll be holding on to these for now. I do have some Morgan dollars that I may be selling soon, however. Some with the same toning. As soon as I get enough posts to list in the classifieds, I'll offer them to the CoinTalk community first.
Don't listen to these guys. Here is what to do: 1.Carefully place all 3 of them in a modern white envelope. 2. Seal the envelope. Self sealing or licking it will work fine. 3. carefully write my address on the envelope. 4. place 2 stamps in the upper right corner. 5. Drop it in a mailbox. 6. Profit?
You can clean them but I think the two on the right are too far gone. Cleaning toning like this is not hard, but you have to know what you are doing. Its called a dip, and you can research it here. Listen, people say to not clean coins since way too many coins have been improperly cleaned over the years. Properly done you can remove blotchy toning on a coin if the toning is not too far gone. A matte black color is where its too far gone, and the toning is actually corrosion. Having said that, I don't think these are either salvagable or worth it. I would simply keep them as is or sell and buy new ones. Try to store coins away from a damp atmosphere.
This is not my coin but i see that it stands as a good example of cleaning with vinegar for one day of silver coins that do have an ugly toning and are to be sold for melt thus cleaning will not do any harm and will not decrease the value. The pics shows before and after soaking in vinegar for one day, and again the coins are not mine they are shown on another forum
Antique can be conserved by proper conserving (cleaning) by experts. Coins now can be also "Conserved". SO, you cannot clean coins, but you can conserving them?? What then, is the difference. A matter of words.:rollling: A matter of words.