Canada
Elizabeth II brass Specimen Uniface Die Trial "Maple Leaf" 50 Dollars 1985 SP65 PCGS, Royal Canadian Mint, cf. KM125.2. Obverse die trial in brass of the famed 1 oz gold Maple Leaf issue, featuring the portrait of the Queen. Undoubtedly extremely rare, this being the first we have seen of the type, and is apparently one of the first to come to auction and one of only two certified by PCGS.
https://coins.ha.com/itm/canada/canada-elizabeth-ii-brass-specimen-uniface-die-trial-maple-leaf-50-dollars-1985-sp65-pcgs-/a/3089-32397.s?type=CoinArchives3089
HID02906262019
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Estimate: 800-1000 USD