I'm in the market for a 1981 Sovereign, as a special present. Interestingly, the Royal Mint prices it at £335 (proof), and another site sells them in different qualities: EF uncirculated (£214.55); uncirculated (£238.35); proof, no certificate (?) (£212.90). I'm confused about the relationship of pricing, as I would have thought that proof would be more expensive (why no certificate?) and EF uncirculated is less expensive than ordinary uncirculated. Clearly, much to learn...!