Retro Traveler (aka Kolby) on Flickr posted this photo of a Yosemite key chain his grandfather cherished and left him when he passed away. Barring the sentimental reasons his grandfather may have associated with it, maybe one of the Yosemite Blog readers might have some insight into the significance of such a keychain. It appears to be bronze.
Photo by Retro Traveler (aka Kolby) via Flickr.