Stack's Bowers & Ponterio
Collector's Choice February 2022 Auction 22-24 Feb 2022
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Fr-1; KM-23. AGW: 1.4286 oz. Mintage: 710. Serial number "579" stamped near 7 o'clock on the reverse. Nearly flawless, this generously sized proof issue offers very strongly frosted devices and attractive mirrored fields that make this specimen a treasure.