When was the Parthian late bodygourd first use, historically?

[LDC]

Historically, cataphracts armoured like the Late Bodyguards and the Late Armored Elite Cataphracts were not in use until the first centuries AD. Down to the first century BC, all Parthian cataphracts were armed like the Parthian Noble Cataphracts.

Oh really? I'm sure I remember one of EB team members say they were use in the first century BCE.