Canada
Elizabeth II copper Specimen Uniface Trial Strike "Shot Put" 10 Dollars 1976-Dated SP62 Brown PCGS, KM-Unl. 46.4gm. Bonded Planchet, struck in pure copper. Trial issue struck for the 1976 Montréal Olympics featuring shot put. Similar to the adopted reverse for the 1975 $10. A new discovery and the only known specimen.
https://coins.ha.com/itm/canada/canada-elizabeth-ii-copper-specimen-uniface-trial-strike-shot-put-10-dollars-1976-dated-sp62-brown-pcgs-/a/3088-34336.s?type=CoinArchives3088
HID02906262019
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Estimate: 2500-3500 USD