Thank you for your interest in the item. This is a Koran case purchased from an antique shop in Nakameguro. It was used by nomadic people in Africa to carry the Koran, and I was told it was Tuareg. It's quite old. The metal is unknown, but I believe it's some kind of alloy. Dimensions (cm): Height: Approximately 12.7 Width: Approximately 8.5 Thickness: Approximately 2.5 There is some warping on the lid from the time of purchase. Please check the photos. It's not often seen in Japan, and I think it's a rare item. How about it for those who like it? Due to its age, there may be minor scratches and stains. Please refrain from purchasing if you are concerned.