GREAT BRITAIN. Duo of Piefort 5 Pounds (2 Pieces), 2009-10. Llantrisant Mint. Elizabeth II. Both NGC PROOF-70 Ultra Cameo.A pair of flawless piefort silver proofs commemorating the countdown to the 2012 London Olympics.<p>1) Piefort 5 Pounds, 2009. cf. KM-1121a.<p>2) Piefort 5 Pounds, 2010. cf. KM-1139a.NGC.