GERMANY. Prussia. 20 Mark, 1910-A. Berlin Mint. PCGS PROOF-64 CAMEO Secure Holder.Fr-3831; KM-521. Dramatically cameoed with deep reflectivity in the fields that results for minimal handling and stark frost over Wilhelm IIs portrait and the reverse eagle motif. A delectable example of world Proof gold.PCGS PROOF-64 CAMEO Secure Holder.