It was never lost though really, just like all those other artefacts we read about in the news being “found” in museums, libraries, institutions etc.
The reality is that in these places things get pushed to one side or put into storage, and then, because of access restrictions, very few people, especially any with specialized knowledge, ever get to see the items until one day some smart Alec curator deigns to get his or her hands dirty and root around in a store room, when lo and behold! we get yet another media article about a “lost” artefact being found against all odds.