Great Britain
Elizabeth III gold Four-Piece Certified "500th Sovereign Anniversary" Set 1989, 1) 1/2 Sovereign - PR68 Ultra Cameo NGC, KM9552) Sovereign - PR68 Ultra Cameo NGC, KM9563) 2 Pounds - PR68 Cameo NGC, KM9574) 5 Pounds - MS68 NGC, KM958The sovereign in particular is a key for modern collectors of the series.
Estimate: 3000-3500 USD