GERMANY. Prussia. 3 Mark, 1915-A. Berlin Mint. PCGS PROOF-63 CAMEO Secure Holder.KM-539; J-115. Struck to commemorate the Centenary of the Absorption of Mansfeld. Sharply struck with mirrored fields and faint peripheral yellow and lavender toning.PCGS PROOF-63 CAMEO Secure Holder.