拍品描述： GREAT BRITAIN. Proof 6 Pence, 1853. PCGS PROOF-64 CAMEO Secure Holder.S-3908; KM-733.1. Currently the only example at either NGC or PCGS that garnered a Cameo designation. Though not the finest graded it is certainly a beautiful example with deep contrast from the flashy proof fields and the well defined frosted devices. Light attractive smokey grey tone creeps in from the edges leaving the delicate centers virtually tone free.