Canada
Elizabeth II silver Specimen Uniface Trial Strike "Skyline" 10 Dollars 1976-Dated SP61 PCGS, KM-Unl. 22.4gm. 0.420 fine. Trial issue struck for the 1976 Montréal Olympics featuring the Montréal skyline. Similar to the adopted reverse for the 1973 $10, but a flatter image. A new discovery and the only known specimen.
https://coins.ha.com/itm/canada/canada-elizabeth-ii-silver-specimen-uniface-trial-strike-skyline-10-dollars-1976-dated-sp61-pcgs-/a/3088-34342.s?type=CoinArchives3088
HID02906262019
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Estimate: 2500-3500 USD