Stack's Bowers & Ponterio (August 2016 Hong Kong Auction)
KM-4.1; Mars-C3. RARE. An almost never encountered SPECIMEN striking of the issue, and highly desirable as such. Premium quality for the assigned grade with bright untoned lustrous surfaces. PCGS SP-64 Secure Holder.
Ex: King's Norton Mint Collection.
Estimate: $1400.00- $1800.00