In Velehk Sain's hidden treasure. If you release Velehk Sain, a Daedra found in The Midden, he will give you his treasure map, which will allow you to find his hidden treasure. The treasure is found below a large statue of Talos to the west of the College of Winterhold.
The display can take both the original and the replica.
You need to have the original in your inventory for the replica recipe to be available.