Suggestions For Storing Coins In Humid Climates?

I just wanted to reply because I read about the silica gel that "unfortunately they aren't the reusable type".

It is my understanding that they are ALL reusable.

There are certain types that have 'indicator' granules that change color - say from blue to pink, but they are ALL reusable.

The way you reuse or recharge them is to bake them in an oven at above the boiling point of H20 - 212F or 100C. It is possible to do so in a microwave but that is a lot more temperamental (easier to melt the plastics).

If you have an accurate scale you can confirm that you have dried your silica packets by weighing them. Old saturated packets weighing 100 grams may weigh 30-40 grams after baking. The difference is the amount of moisture they have absorbed.

JustCarl is right in that you have to swap them out often or they are not useful.

I would also like to second or third BadThad in that Mo Layers = Mo Betta!

-wheatiefan

Moisture can seap out of anything. Moisture is just a gas like air. Air can seap in and out of places that many think are air tight. And again, those silica and other moisture absorbing substances are only as good as you remembering them. As they get WET, the stuff that they are contained in, could slowly disentigrate and attach to your coins.
As to a Zip Lock Plastic bag, they too are only as good as you. YOU have to press out as much air as possible. YOU must make sure you sealed the Zippin thing. And remember too that the more you open and close one, you allow moisture to go in and out.
Some time ago there was a post containing info on those air suckion devices for plastic bags. I've always wondered how those would work.
Over the years I've found the best thing is a sort of sealed house with a few really good dehumifiers. My Hygrometer shows from 20 to 30% all the time, all year long.