While I appreciate that approach and think it is a great policy… For things like this I feel like the original should be displayed, but protected and a replica be available for patrons to touch and approach closely. Especially something so rare to find in such good condition. Just make it clear that the replica is a replica specifically so they can touch it and get a good look without risking damage.

Hiding things behind glass isn’t the best experience, but extremely rare artifacts also need to be protected. Replicas, properly disclosed with an explanation why, are a good compromise.