This item was apparently given to my father by the company, Toa Domestic Airlines, to celebrate his 20 years of service. It's from over 40 years ago, but it has never been used and is in good condition. Toa Domestic Airlines later changed its name to Japan Air System and was absorbed by Japan Airlines in 2006, so it no longer exists. (Large) Diameter 10cm (Medium) Diameter 8.5cm Both have "24K GP" inscribed on the back, indicating they are gold-plated items. The luster is so strong that the interior of the room is reflected no matter how I photograph it; I apologize. Although it is a beautiful item, it is still a used item, so please refrain from purchasing if you are sensitive to such things.