I bought this myself when the Osaka Expo was held in 1970. I have not touched the Canadian dollar coin with my bare hands, nor have I taken it out of the plastic case, so it is very clean. You can check the photos for reflections, etc. The red on the coin is red powder from the lining of the case. The coin itself is clean. However, the outer case, which was stored in the included paper case, shows 45 years of aging, although it was not displayed. Case size is approximately 83 x 65 x 21mm. Coin size is approximately Φ31mm. I couldn't find this item for sale anywhere else, so I think it's a rare item. One owner.