GREAT BRITAIN. 25 Pounds, 2001. Llantrisant Mint. NGC PROOF-70 Ultra Cameo. S-BO5 (old 4471); Fr-459; KM-1021. Mintage: 500. AGW: 0.2508 oz. An extraordinary Gem, this flawless specimen presents an elegant matte nature to the Una and the Lion design, offering tremendously alluring frosting throughout.