Related Clues:

• A set performing, good over a period of many years
• 'Where the Heavenly Hours/ Weave the vast circle of his ——— day' (Southey, The Curse of Kehama)
• A hair product on girl's head is lasting for years
• Existing through history
• Part of the stage, longest one lasting a considerable time
• A medal worn by the Spanish for an eternity?
• Ancient European expelled from a Victorian city
• Lasting for years and years
• Highly durable
• Lasting throughout, say, withdrawn inside
• Ancient and backward Russian area: no good
• Enduring tree's root impedes silver pine
• Very lengthy mature pine