Welcome to the
forum Barry.
There is a Coin Photography, Conservation and Storage section on this
forum which has many interesting posts related to storage. It is well worth a read.
Though
forum members use all kinds of different storage options, you will find that, in general, we are a "let it be free" bunch. So one question is why do you need a container for it.
Ancient coins are generally
fine sitting in trays without any extra protection. Silver tones better "au naturelle".
Shawn