Don't know about that item, but hav a frend who has a hoof from her long dead hunter, with a silver plated shoe on it. I have to say I have always found it a little creepy
They do look more like armour than presevation boxes!
If you go to the national racing museum in newmarket, you can see all the stuffed heads of the greats and their hoofs in the cases. It is abit creepy but cool to!