This is a pin badge from the 1970 Osaka Expo. It was owned by a family member who worked as a staff member. It is likely a non-sale item. The size is about 1.6cm. Although unused, there is natural deterioration due to amateur storage. There is a slight rust-like dullness. The bag is not clean, but it was stored as a set, so I will include it. Please consider. Osaka Expo Goods