You can store all kinds of coins and medals of the Czech Mint with a diameter of 22 mm in a luxurious collector´s etui made of dark wood, for example:

• quarter-ounce gold investment coins entitled Czech Lion, which can be obtained exclusively through the Czech Mint´s saving in gold
• quarter-ounce gold coins from the mini-series The Establishment of the Royal Capital City of Prague
• quarter-ounce gold coins from the series Legends of Czechoslovak hockey
• quarter-ounce gold medals from the series entitled Stories of Our History

A wooden case will be the right choice if you need to store your collection elegantly, and provide it with an additional protection.