Nissan Skyline GT-R keychain. This is an authentic Nissan ALTIA product, and I believe it's now a very rare item. About 20 years ago, when I owned a Hakosuka (Skyline), I used this keychain on my spare key. There may be some age-related deterioration, but since it was a spare key, it was used very little and I think there's not much damage. Please check the images.