Tarnished/ Oxidized coins

[looch258]

I have proof sets going back to the early 1960's and have decided to sell them. They have been in a bank vault since I purchased them. I took a small sample to a reputable dealer and he offered me about 25% of buy price because all the silver and copper coins have oxidized/tarnished and are dark because of the sulfur gas in our local water supply. Is there any thing that I can do to reverse this or must I sell them for only a fraction of what I paid for them? Any comments would be greatly appreciated.

[terry505m]

These coins are still good, and worth more than 25%. They are probably worth at least $7.50 to $11. The 1968-S set, without the S dime, is worth $10,000, so be careful of dealers! Oxidation is normal, and often prized, especially in a proof coin that has never been handled or cleaned.

[dschnepp]

You might want to send them off to be graded.

[szul2005]

Most dealers will add a premium to the attractive coins and dip the rest.Either way,they'll get full retail money on whatever they buy from you.If they think a particular coin won't dip well,they won't want to buy it.

[gstaggs]

When I have a set that has one or more coins that have spots or are tarnished, I open the set - take out the tarnished coin and sell the others one at a time. I also tell the buyers exactly what happened.

[homerunsell]

tarnished oxdized coins a home remedy that i have found to be great is (not in any which way a cleaning solution) that vacum sealed packs put a couple of coins in a vacum pack and suck the air out to reduce more porblems