It is found in Kolbjorn Barrow on a pedestal during the third investment stage of the quest 'Unearthed'. It is behind a rotating stone wall that can be opened by pulling a sequence of three chains nearby.
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.
Made at the Replica Station in the Curator's Office with the following materials: