2007-06-21 12:02:06 · 5 answers · asked by linda m 1 in Games & Recreation ➔ Hobbies & Crafts
I have silver bars in plastic envelopes that have tarnish only where the envelope seals improperly, it is just from air exposure.
2007-06-21 12:07:07 · answer #1 · answered by Jon R 3 · 4⤊ 0⤋
Silver can tarnish easily. The material it is in can cause it, as well as the air around it. You can tarnish ( actually in numismatics it is toning) silver even in an air tight case, if you let the sun get at it. Handling it won't help either. There are lots of reasons coins tone, I have had 2 proof silver coins next to each other in archival holders for several years, one has toned the other has not. I have no idea why. I have learned to live with it. If your coin is truly mint state there are cleaners out there to remove the tone. See a coin dealer or go to www.brooklyngallery.com they are a large supply dealer and have the cleaner. It should not be used on any coins that are not mint state. I believe it is called MS-70.
2007-06-21 13:28:13 · answer #2 · answered by Taiping 7 · 3⤊ 0⤋
Silver can tarnish in reaction with the chemical compound of hydrogen sulfide(H2S) which is naturally present in the air as a result of the bacterial break down of organic matters in the absence of oxygen. Some paints, textiles and other household materials also emit some sulphur-contained compounds that also cause silver coins to tarnish and tone. It's normal for coins to have patinas and toning on the their surface over time. They can be cleaned with a dip cleaner, but it's best to leave that to the trained hands.
2007-06-21 17:31:15 · answer #3 · answered by silverpet 6 · 0⤊ 0⤋
That would probably be the .001% of something else (most likely copper). Or that's not what the alloy actually is. Haven't worked a lot with fine silver, but I didn't think it got tarnished (I know it doesn't get firescale).
2007-06-25 04:47:54 · answer #4 · answered by spunk113 7 · 0⤊ 0⤋
Maybe it's a fake.
2007-06-21 12:05:25 · answer #5 · answered by Madikar 3 · 0⤊ 4⤋