what are the most valuable coins uk?
['London 2012 Olympics Aquatics 50p first design – up to £1,500.', '1983 New Pence 2p coin – up to £1,250.', 'Silver 2p (1971 to 1992) – over £1,000.', 'Zinc £2 coin – between £800 and £1,300.', 'Silver 2p (1992 to 2018) – up to £600.', 'Kew Gardens 50p – up to £160.']