1. Install and inventory AS5/EAP5
2. Content > Deployed
3. Observe "Installation Date" for all the stock .jars that come with the server.
(Something akin to)
14497 days, 19 hours ago
Not sure here perhaps $current_date - $server_install_date or something? I think this is happening because Jopr uses default epoch time. or a null, for original content (I think there's a Jira for this)