Greece
Constantine I aluminum Specimen Uniface Trial 50 Lepta 1921 SP61 PCGS, Birmingham mint, KM-TS21. Trial strike, struck in collar. A rare occurrence of this rare trial issue in aluminum displaying only the obverse design, with the olive branch and denomination reverse design left unstruck. A fleeting opportunity to acquire an example of this infrequently seen trial type and an important relic of Greek numismatic history.
https://coins.ha.com/itm/greece/greece-constantine-i-aluminum-specimen-uniface-trial-50-lepta-1921-sp61-pcgs-/a/3083-30398.s?type=CoinArchives3083
HID02906262019
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Estimate: 2000-2500 USD