More than 400 fragments of iron was discovered in 2018 at Kalkriese, Germany, site of the Varus defeat at the Teutoburg Forrest Battle site. It has been recently reassembled and the result was a nearly complete set of lorica segmentata. It is made of 30 plates.
It has been suggested that it was so well preserved as it was part of a triumph ritual.
It is now on display for the first time in a new exhibit at Kalkriese Museum “Cold Case: Death of a Legionary.”
https://www.kalkriese-varusschlacht.de/museum-park/ausstellungen/cold-case-tod-eines-legionaers.html
Here is a reenactor of the 1st century AD armor: