90
Roman 'hologram' ring with an illusion of 3d depth, gold and quartz, Roman Empire, 1st century AD
(media.piefed.social)
Just a community for everyone to share artifacts, reconstructions, or replicas for the historically-inclined to admire!
Generally, an artifact should be 100+ years old, but this is a flexible requirement if you find something rare and suitably linked to an era of history, not a strict rule. Anything over 100 is fair game regardless of rarity.
OTHER COMMS IN THE HISTORYVERSE:
From behind and inverted, I think.