Answer:
I cannot be bought cannot be sold even if Iām sometimes made of gold.
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
Golden treasure I contain guarded by hundreds and thousands. Stored in a labyrinth where no man walks Yet men come often to seize my gold. By smoke I am overcome and robbed then left to build my treasure anew.
What happens once in June twice in August and never in May?
With a halo of water and a tongue of wood, stone as skin long I stood. What am I?
I am a rock group with four members. All dead one was assassinated.