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Rust on silver coins?
Early_Milled_Latin_America
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Does it get worse over time? My coins are 0.917 silver.
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Rust? That term is generally understood to mean iron oxides, which are typically not found on 0.917 silver coins.
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Do you mean toning? I strongly suggest that you do nothing to them. Toning may be attractive, but cleaning them often lowers their values.
I do not know the proper term. Just looks like rust areas on my coin. It is for sure 0.917 silver as they were all from that series.
No toning I would know this looks like rust spots.
This one is bad the one I am talking about has little spots here and there nothing like this. Both coins are mine:
Do coins with this type of ''rust'' get worse over time?
On a coin of that vintage I would not worry about it.
Legit "rust" on US .900 silver. Note iron under wing and near Liberty's foot
Will it get worse over time? Or just stay the same?
If iron oxides does it get worse over time? These coins for the 1700's from Latin America may not have all been minted with the alloys (silver/copper mix) properly mixed.
I would expect it to stay the same, as long as storage conditions are acceptable.
Collector, occasional seller
Just curious if it were to get worse what exactly would happen? I know about PVC but this I do not know.
And long term how could it get worse? I imagine it would just stay the same.
As far as I know, it doesn't spread over the surface or get worse.
That makes sens since it cannot spread to the silver since silver does not ''rust''. Thanks.
That's not the coin that is producing the rust.
The 1 real coin has rust adhering to it from either being buried or stored next to iron for years. The rust has adhered to the surface and should not spread, just as it did on many of the S.S. Central America gold coins before the rust was removed.
Bright (not dull) green corrosion on bronze is active and should be addressed but that (and PVC accumulation) are the corrosive enemies of coins that need to be watched.
Thanks guys!!!
I acetone bath all my coins. So if there was any PVC it would be gone.
Can it become bright green over time (what would cause it to do so) the exposed cooper on silver coins? Would the acetone bath eliminate that? And once gone will it stay away? All my coins are 0.917 silver.
I do not see anything green on either of my 2 coins looking with a microscope. I put all my coins in 2 by 2 Mylar cardboard flips. I imagine that would prevent it from becoming green over time since no moisture would get to it (or very minimal if any).
Does anyone here own such coins and if so have they become greenish over time the exposed copper areas? Would acetone be enough to deal with such an issue or would it take some other product?
Might not be rust on the reverse of my 1862-S quarter, but sure looks like it.
Doug
Silver reacts with the sulfur in the air. Milk spots happen and as far as I know cannot be removed.
Old silver coins turn black and cracked around the edges.
Their "rust is iron oxide" argument isn't as strong as the "rust like process that metal endures" meaning that people use.
Keep calling it rust just to annoy them
Will it get worse over time, probably. Almost certainly.
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Same as my coin.> @RiveraFamilyCollect said:
How could it get worse over time? What would happen? Rust cannot spread to silver. Silver does not rust. It is the copper alloy. I have owned this coin for years and just looked at it it is the exact same nothing has changed (no green areas either).
If you keep it dry, in an enclosed container with desiccant, it should remain stable and not get worse.
Mr_Spud