Spotting Of Coins In Safty Deposit Box.whats The Answer?

The coins are in 2x2s, whitman albums for pennies,nickels and dimes, and TPG slabs. There is a partial haze and toning, light spotting and also a white powder like crust on some of the pennies.
I never thought of cleaning product being a air born problem.

Thanks Carl. We have done as you recommended in our two little safes with the ZIP lock bags. I don't know why I didn't do at the bank. Brain slow getting in gear. Thanks again.

Thad, Would Verdi-Care help protect these coins. I have used it on ancients and had very good results. I have also used it on other coins We took to a flea market and professionals didn't know we had used anything. I want your opinion on copper,nickel,silver and gold. Soaking light rubbing what would be your approach. Thanks for your opinion.

You can make your own. Just mix some rice and salt together.
Rice alone works but can attract rodents etc. Salt also works alone.
Mixed they will not attract vermin and act as well as silica or other
substances. Baby powder will work also. Have the ol lady umm, wifey or whatever sew you up some packets. Actually I sew myself. Men can sew.

The problem is the conditions in a bank vault for the preservation of documents is not the same as what is needed for the preservation of coins. Documents need a high humidity to keep from drying out and getting brittle, coins need a low humidity.

I've heard this several times in the past. And not long ago I posted what I found out from several banks about such things. At 5 different banks I was sort of laughed at since all pointed out they have only one A/C system and to have another system for safedeposit boxes is not exactly in their budget. This is true of smaller brach type banks of which today, most are. At a few very, very large banks in the downtown Chicago area trying to find someone that knew the answer or wanted to discuss this was no fun. Most looked at me as if I wanted to rob the place.
At a few local Bank of America places where I have safe deposit boxes they did show me the air ducts that went into the vaults. And they are the same ones that were for the entire bank. As one bank officer pointed out to have additional humidity pumped into a safe deposit area would make for massive complaints by employees. Most appreciate the A/C getting rid of humidity.
I suggest if you think banks have a separate A/C system for the safe deposit areas, just go there and ask. There may be banks that do this but for normal, everyday, regular banks that are recently pennie pinching, a separate A/C system for one area in the bank is just not practicle.

What an education I have received on bank vaults and safety deposit boxes. The humidistat is set at 55-65% and the temp is set at 74 deg. The main a/c unit supplies all the cooling regulated by variable dampers through out the bank. The humidity is also controled by this unit. My bank is TD BANK. I have put all the coins in ziplock freezer bags for the time being. The safty deposit boxes are not air tight and the only guarantee is for physical loss,covered for declared value.

Another thing to observe at most banks is during the day, most banks have the vaults open to the normal air of the bank. In most though they do have a barred door to stop just anyone from going in and out. Those barred doors allow the air from the bank to go into the vaults kad out as well. One more reason that it is impractical to have a separate system for any one room in the banks.
At another bank I go to the safe deposit boxes are in the basement. There is a person stationed there all day to allow people to use their safe deposit boxes and/or to acquire new ones or get rid of present ones. I asked about the A/C system there since it is known that cold, damp air falls and hot dry air rises. The lady stationed down there said she sure would appreciate a separate system for down there since the air really is horrible. Unfortuately for her there is only one system for the entire bank.