Possible Clues:

• Ridiculously old-fashioned aunty told Diana to say it in Troy
• Very antiquated — invalidate UN (anag)
• Very old-fashioned (from before the Flood?)
• Very old unit alive and kicking
• Old-fashioned Latvian due in for processing
• As old-fashioned as Noah's ancestors?
• Change to Indian tea, luv, before the water's bubbled up
• Very old and outmoded
• Ancient Latvian nude gyrating? I'm impressed
• Ancient